Richard Boorberg Verlag

Overview

Snoop Summary for boorberg.de

This is a free and comprehensive report about boorberg.de. The domain boorberg.de is currently hosted on a server located in Leonberg, Baden-Württemberg in Germany with the IP address 94.186.214.31, where the local currency is EUR and German is the local language. Boorberg.de has the potential to be earning an estimated $1 USD per day from advertising revenue. If boorberg.de was to be sold it would possibly be worth $971 USD (based on the daily revenue potential of the website over a 24 month period). Boorberg.de receives an estimated 462 unique visitors every day - a decent amount of traffic! This report was last updated 23rd January, 2023.

About boorberg.de

Site Preview:
Title:	Richard Boorberg Verlag
Description:	Sehr u00fcbersichtlich gestaltetes Verlagsprogramm mit juristischen Nachrichten und Referendarszeitschrift zum kostenlosen Download.
Keywords and Tags:	education, reference
Related Terms:	kostenlosen
Fav Icon:
Age:
Domain Created:
Domain Updated:
Domain Expires:

Review

Snoop Score

1/5

Valuation

$971 USD

Note: All valuation figures are estimates.

Popularity

Low

Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank:	1,748,324
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority:	0
Moz Page Authority:	0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors:	462
Monthly Visitors:	14,062
Yearly Visitors:	168,630

Note: All visitors figures are estimates.

Visitors By Country

Revenue

Daily Revenue:	$1 USD
Monthly Revenue:	$40 USD
Yearly Revenue:	$481 USD

Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top Ranking Keywords (US)

Domain Analysis

	Value	Length
Domain:	boorberg.de	11
Domain Name:	boorberg	8
Extension (TLD):	de	2

Page Speed Analysis

Average Load Time:	0.25 seconds
Load Time Comparison:	Faster than 98% of sites

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

Progressive Web App

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

URL: https://www.boorberg.de/

Updated: 15th July, 2020

1.73 seconds

First Contentful Paint (FCP)

54%

37%

9%

0.00 seconds

First Input Delay (FID)

99%

0%

1%

Simulate loading on desktop

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for boorberg.de. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Time to Interactive — 2.5 s
The time taken for the page to become fully interactive.

Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Cumulative Layout Shift — 0.018
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

First CPU Idle — 2.5 s
The time taken for the page's main thread to be quiet enough to handle input.

Max Potential First Input Delay — 30 ms
Users could experience a delay when interacting with the page.

Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive boorberg.de as laggy when the latency is higher than 0.05 seconds.

Network Requests
Below is a list of network requests that were made during page load.

URL	Start Time (Ms)	End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://boorberg.de/	0	345.08799994364	493	0	301	text/html
https://www.boorberg.de/	345.38799989969	1404.0349996649	19645	74450	200	text/html	Document
https://www.boorberg.de/css/fonts.css	1417.4839998595	1856.8420000374	1928	5933	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/css/normalize.css	1417.7469997667	1968.5909999534	3097	7708	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	1417.8939997219	2085.4980000295	20414	164537	200	text/css	Stylesheet
https://www.boorberg.de/css/font-awesome.min.css	1418.0129999295	1840.3379996307	7131	27479	200	text/css	Stylesheet
https://www.boorberg.de/css/validation.css	1418.2919999585	1979.9239998683	779	227	200	text/css	Stylesheet
https://www.boorberg.de/css/magic-check.css	1418.4129997157	1528.1859999523	1372	2662	200	text/css	Stylesheet
https://www.boorberg.de/css/SideNav.css	1418.6869999394	1956.2399997376	1132	970	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	1418.985999655	2045.0899996795	30596	84758	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/modernizr.js	1419.1469997168	1856.1179996468	4619	9288	200	application/javascript	Script
https://www.boorberg.de/scripts/jquery-ui.js	1419.3279999308	2282.4809998274	112389	464435	200	application/javascript	Script
https://www.boorberg.de/scripts/knockout-3.3.0.js	1419.5469999686	2068.5049998574	21251	55956	200	application/javascript	Script
https://www.boorberg.de/scripts/knockout.mapping-latest.js	1420.0470000505	1843.499999959	3813	9386	200	application/javascript	Script
https://www.boorberg.de/scripts/common.js?v=1449735121	1420.2099996619	1967.9899998009	2845	8321	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	1420.3200000338	1841.9530000538	1754	2187	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	1420.4299999401	1841.157999821	1869	3951	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	1421.1769998074	1842.2939996235	1700	4079	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	1421.2919999845	1844.0729998983	3927	13890	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	1421.435999684	1846.5449996293	3515	8291	200	application/javascript	Script
https://www.boorberg.de/App_Themes/default/colors.css	1421.5730000287	1956.9560000673	19545	92565	200	text/css	Stylesheet
https://www.boorberg.de/App_Themes/default/colors.min.css	1421.6749998741	2151.8500000238	16266	73181	200	text/css	Stylesheet
https://www.boorberg.de/App_Themes/default/default.css	1421.819999814	1842.9479999468	660	32	200	text/css	Stylesheet
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	1422.2379997373	2371.6569999233	61697	357754	200	application/x-javascript	Script
https://www.boorberg.de/ScriptResource.axd?d=tKmm0wSy00xVhKZi7faoJPJllFO-aqqyM3C7aacBWgWfHdBKWyhxPvXVoDzLrxHnD9rDC7eO8fXMgQwgu6XL8qa7eLvZBbuKkYuUbLXnW5RyTVRTZhLKCRhKUeHbqtKEnTJaYOyhP4yTbgrfZC0MEQ2&t=f2cd5c5	1422.3479996435	1647.7609998547	15749	95654	200	application/x-javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebForms.js	1422.4629998207	1970.2289998531	4967	22408	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebUIValidation.js	1422.5860000588	1845.4309999943	6012	27150	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/MenuStandards.js	1422.7129998617	1988.8939997181	5412	27802	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/GridView.js	1422.8949998505	1843.2229999453	1172	1503	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/DetailsView.js	1423.2899998315	1841.6229998693	1132	1343	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/TreeView.js	1423.390999902	1844.6319997311	2469	9410	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebParts.js	1423.5179997049	1845.989999827	5390	27246	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/Focus.js	1423.6669996753	1846.83699999	1352	3067	200	application/javascript	Script
https://www.boorberg.de/ScriptResource.axd?d=6Xvt7yBw_f6x28cpdZNH51qjRfdtcosdjfGr3QyL-pWPMRb1QPsoC0L2BrLT1uxsmzk_sAUrRlLSXK6X7c3KtvyosX81UTENf1_xtmLfj5Inv_L2wjgZ5Dy-7JSdsHMB6SvbaW0hzHZ1huFTQDh0-Q8APPNWHPjshmovxxNj9QDoY4UWn-j3T0Z74TjGrBME0&t=202584f9	1423.7839998677	1845.7140000537	5530	25491	200	text/javascript	Script
https://www.boorberg.de/images/printheader.svg	2331.8559997715	2440.7520000823	27269	26800	200	image/svg+xml	Image
https://www.boorberg.de/images/header_portal_logo_0.svg	2332.0529996417	2441.0999999382	4770	4302	200	image/svg+xml	Image
https://www.boorberg.de/images/header_portal_logo_1.svg	2332.1499996819	2446.6549996287	4770	4302	200	image/svg+xml	Image
https://www.boorberg.de/images/icon_search.svg	2332.4899999425	2441.9619999826	1414	947	200	image/svg+xml	Image
https://www.boorberg.de/images/Buchservice_Logo.svg	2332.6409999281	2439.4379998557	2709	2241	200	image/svg+xml	Image
https://www.boorberg.de/images/ajax_loader.gif	2333.6899997666	2439.6669999696	1136	673	200	image/gif	Image
https://www.boorberg.de/scripts/SubjectTree.js?v=1449735121	2293.9029997215	2400.1149996184	1406	2547	200	application/javascript	Script
https://shop.boorberg.de/DownloadProxy/Default.aspx?size=l&p=9783415067578	2334.2889999039	2919.5469999686	5019	4144	200	image/jpeg	Image
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	2334.4299998134	3391.5319996886	317651	317401	200	image/jpeg	Image
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	2334.6079997718	3396.6419999488	219176	218925	200	image/jpeg	Image
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	2334.7869999707	3390.5149996281	211173	210923	200	image/jpeg	Image
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg	2334.9349997006	2672.0429998823	1612	1360	200	image/svg+xml	Image
http://cms.boorberg.de/Medien/leseprobe.svg	2335.0779996254	2679.1149997152	1298	1046	200	image/svg+xml	Image
https://www.boorberg.de/images/boorberg_shop_logo.svg	2335.2319998667	2441.6579999961	5835	5367	200	image/svg+xml	Image
https://shop.boorberg.de/DownloadProxy/Default.aspx?size=l&p=9783415064652	2336.2619997934	2989.92599966	4705	3830	200	image/jpeg	Image
https://www.boorberg.de/css/print.less	2336.6000000387	2444.3909996189	1097	1772	200	text/css	Stylesheet
https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.css	2330.288999714	2352.1019998007	1858	4064	200	text/css	Stylesheet
https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.js	2330.7099998929	2355.0469996408	7365	20808	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	2330.8839998208	2440.3699999675	29697	122744	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.orbit.js	2331.5619998612	2439.1369996592	4248	18558	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.dropdown.js	2331.7370000295	2438.5539996438	3848	15004	200	application/javascript	Script
https://fast.fonts.net/t/1.css?apiType=css&projectid=48085a11-4c64-4b97-9cfe-ff58ef780fc7	1857.938000001	1873.1919997372	341	0	200	text/css	Stylesheet
https://piwik.boorberg.de/piwik.js	2336.4579998888	2981.0559996404	23765	69339	200	application/javascript	Script
https://www.boorberg.de/App_Themes/default/colors.less	2329.6709996648	2604.3030000292	12695	92537	200	text/css	Stylesheet
https://www.boorberg.de/images/body_bg.gif	2336.9199996814	2441.3669998758	525	63	200	image/gif	Image
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	2646.0819998756	2857.4679996818	46218	45740	200	application/font-woff2	Font
https://www.boorberg.de/images/arrow_down_white.svg	2647.9690000415	2752.5679999962	994	527	200	image/svg+xml	Image
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	2649.5119999163	2758.5720000789	52810	52332	200	application/font-woff2	Font
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	2649.7160000727	2757.9459999688	39086	38608	200	application/font-woff2	Font
https://www.boorberg.de/images/arrow_right_bullet.png	2680.7049997151	2787.5439999625	3327	2863	200	image/png	Image
https://www.boorberg.de/images/arrow_right_bullet_active.png	2682.0699996315	2891.0940000787	17796	17331	200	image/png	Image
https://www.boorberg.de/PartialUpdatePanelLoader.ashx?__t=1594801031246	2794.4229999557	2922.8679998778	1994	1620	200	text/html	XHR
https://www.boorberg.de/PartialUpdatePanelLoader.ashx?__t=1594801031250	2796.3399998844	3416.1099996418	1854	1117	200	text/html	XHR
https://piwik.boorberg.de/piwik.php?action_name=www.boorberg.de%2Fboorberg.shop&idsite=3&rec=1&r=985452&h=1&m=17&s=11&url=https%3A%2F%2Fwww.boorberg.de%2F&_id=9e4b3c680ba41c88&_idts=1594801031&_idvc=1&_idn=0&_refts=0&_viewts=1594801031&send_image=1&cookie=1&res=800x600&gt_ms=1059&pv_id=OKYHcz	3005.942999851	3567.5329999067	295	43	200	image/gif	Image

Show Details

Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
1437.896	6.757
1447.377	8.127
2117.316	5.653
2123.005	22.386
2324.436	38.708
2639.144	33.345
2672.507	22.97
2702.975	12.42
2717.644	18.63
2738.312	91.841
2831.15	10.575
2854.81	18.311
2873.86	9.531
2897.7	17.039
2953.982	6.252
3016.759	19.454
3599.233	11.691

Show Details

Diagnostics
Below is a collection of useful page vitals.
View Data

Metrics
Below is a collection of metrics.
View Data

Opportunities

Properly size images — Potential savings of 36 KiB
Images can slow down the page's load time. Boorberg.de should consider serving more appropriate-sized images.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317401	15608
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	218925	10766
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	210923	10372

Show Details

Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Boorberg.de should consider lazy-loading offscreen and hidden images.

Minify CSS — Potential savings of 9 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Boorberg.de should consider minifying CSS files.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/App_Themes/default/colors.css	19545	4388
https://www.boorberg.de/App_Themes/default/colors.less	12695	2860
https://www.boorberg.de/scripts/foundation/css/normalize.css	3097	2306

Show Details

Minify JavaScript — Potential savings of 72 KiB
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Boorberg.de should consider minifying JS files.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/jquery-ui.js	112389	37156
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697	27848
https://www.boorberg.de/ScriptResource.axd?d=tKmm0wSy00xVhKZi7faoJPJllFO-aqqyM3C7aacBWgWfHdBKWyhxPvXVoDzLrxHnD9rDC7eO8fXMgQwgu6XL8qa7eLvZBbuKkYuUbLXnW5RyTVRTZhLKCRhKUeHbqtKEnTJaYOyhP4yTbgrfZC0MEQ2&t=f2cd5c5	15749	5545
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697	3513

Show Details

Remove unused CSS — Potential savings of 60 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Boorberg.de should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	20414	18889
https://www.boorberg.de/App_Themes/default/colors.css	19545	16367
https://www.boorberg.de/App_Themes/default/colors.min.css	16266	13602
https://www.boorberg.de/App_Themes/default/colors.less	12695	12695

Show Details

Remove unused JavaScript — Potential savings of 151 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/jquery-ui.js	112389	93482
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697	38157
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697	23196

Show Details

Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.

Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.

Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Boorberg.de should avoid multiple or unnecessary page redirects.

URL	Time Spent (Ms)
(Start) http://boorberg.de/	0
https://www.boorberg.de/	190

Show Details

Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Boorberg.de should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.

Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Diagnostics

Avoids enormous network payloads — Total size was 1,417 KiB
Large network payloads can cost users money and are linked to long load times.

URL	Transfer Size (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317651
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	219176
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	211173
https://www.boorberg.de/scripts/jquery-ui.js	112389
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	52810
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	46218
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	39086
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	30596
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697

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Avoids an excessive DOM size — 534 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.

Statistic	Element	Value
Total DOM Elements		534
Maximum DOM Depth	SHOW DETAILS	19
Maximum Child Elements	SHOW DETAILS	35

Show Details

Avoid chaining critical requests — 43 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Boorberg.de should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.

JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

URL	Total CPU Time (Ms)	Script Evaluation (Ms)	Script Parse (Ms)
https://www.boorberg.de/	252.038	60.69	3.498
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	131.466	37.865	2.249
Unattributable	75.799	1.279	0.134

Show Details

Minimizes main-thread work — 0.6 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

Category	Time Spent (Ms)
Script Evaluation	193.733
Style & Layout	149.85
Other	125.726
Rendering	67.407
Parse HTML & CSS	44.903
Script Parsing & Compilation	35.237
Garbage Collection	3.339

Show Details

Keep request counts low and transfer sizes small — 68 requests • 1,417 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.

Resource Type	Requests	Transfer Size (Bytes)
Total	68	1451378
Image	19	831474
Script	28	369489
Font	3	138114
Stylesheet	14	88315
Document	1	19645
Other	3	4341
Media	0	0
Third-party	3	9564

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Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.

Third-Party	Transfer Size (Bytes)	Main-Thread Blocking Time (Ms)
SHOW DETAILS	9223	0
SHOW DETAILS	341	0

Show Details

Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.

Element
Die 15. Auflage dieses Buchklassikers für das Fach Politische Bildung bietet ei…

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Avoid large layout shifts — 4 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.

Element	CLS Contribution
Hitschold, Hans-Joachim · Reiners, Markus Der Staat Grundlagen politischer Bi…	0.017808510638298
KARRIERE BEI BOORBERG SERVICES	6.4607302337799E-5
Themen	1.8234830575256E-5
Buchservice	5.3994104427517E-6

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Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.

Avoid long main-thread tasks
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.

Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

First Contentful Paint — 1.6 s
The time taken for the first image or text on the page to be rendered.

Opportunities

Efficiently encode images — Potential savings of 623 KiB
Unoptimized images can consume more cellular data than what is necessary.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317401	279576
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	210923	182003
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	218925	176501

Show Details

Serve images in next-gen formats — Potential savings of 693 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317401	298467
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	210923	198507
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	218925	195573
https://www.boorberg.de/images/arrow_right_bullet_active.png	17331	17115

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Metrics

Speed Index — 3.3 s
The time taken for the page contents to be visibly populated.

Largest Contentful Paint — 3.0 s
The timing of the largest text or image that is painted.

Other

First Meaningful Paint — 2.5 s
The time taken for the primary content of the page to be rendered.

Opportunities

Eliminate render-blocking resources — Potential savings of 1,420 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Boorberg.de should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.

URL	Transfer Size (Bytes)	Potential Savings (Ms)
https://www.boorberg.de/css/fonts.css	1928	70
https://www.boorberg.de/scripts/foundation/css/normalize.css	3097	150
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	20414	230
https://www.boorberg.de/css/font-awesome.min.css	7131	190
https://www.boorberg.de/css/validation.css	779	150
https://www.boorberg.de/css/magic-check.css	1372	150
https://www.boorberg.de/css/SideNav.css	1132	70
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	30596	230
https://www.boorberg.de/scripts/foundation/js/modernizr.js	4619	70
https://www.boorberg.de/scripts/jquery-ui.js	112389	350
https://www.boorberg.de/scripts/knockout-3.3.0.js	21251	150
https://www.boorberg.de/scripts/knockout.mapping-latest.js	3813	70
https://www.boorberg.de/scripts/common.js?v=1449735121	2845	70
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	1754	70
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	1869	70
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	1700	70
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	3927	70
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	3515	70
https://www.boorberg.de/App_Themes/default/colors.css	19545	150
https://www.boorberg.de/App_Themes/default/colors.min.css	16266	150
https://www.boorberg.de/App_Themes/default/default.css	660	70

Show Details

Reduce initial server response time — Root document took 1,060 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

Diagnostics

Serve static assets with an efficient cache policy — 54 resources found
Boorberg.de can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.

URL	Cache TTL (Ms)	Transfer Size (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	0	317651
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	0	219176
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	0	211173
https://www.boorberg.de/scripts/jquery-ui.js	0	112389
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	0	52810
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	0	46218
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	0	39086
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	0	30596
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	0	29697
https://www.boorberg.de/images/printheader.svg	0	27269
https://piwik.boorberg.de/piwik.js	0	23765
https://www.boorberg.de/scripts/knockout-3.3.0.js	0	21251
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	0	20414
https://www.boorberg.de/App_Themes/default/colors.css	0	19545
https://www.boorberg.de/images/arrow_right_bullet_active.png	0	17796
https://www.boorberg.de/App_Themes/default/colors.min.css	0	16266
https://www.boorberg.de/css/font-awesome.min.css	0	7131
https://www.boorberg.de/Scripts/WebForms/WebUIValidation.js	0	6012
https://www.boorberg.de/images/boorberg_shop_logo.svg	0	5835
https://www.boorberg.de/Scripts/WebForms/MenuStandards.js	0	5412
https://www.boorberg.de/Scripts/WebForms/WebParts.js	0	5390
https://www.boorberg.de/Scripts/WebForms/WebForms.js	0	4967
https://www.boorberg.de/images/header_portal_logo_0.svg	0	4770
https://www.boorberg.de/images/header_portal_logo_1.svg	0	4770
https://www.boorberg.de/scripts/foundation/js/modernizr.js	0	4619
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.orbit.js	0	4248
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	0	3927
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.dropdown.js	0	3848
https://www.boorberg.de/scripts/knockout.mapping-latest.js	0	3813
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	0	3515
https://www.boorberg.de/images/arrow_right_bullet.png	0	3327
https://www.boorberg.de/scripts/foundation/css/normalize.css	0	3097
https://www.boorberg.de/scripts/common.js?v=1449735121	0	2845
https://www.boorberg.de/images/Buchservice_Logo.svg	0	2709
https://www.boorberg.de/Scripts/WebForms/TreeView.js	0	2469
https://www.boorberg.de/css/fonts.css	0	1928
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	0	1869
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	0	1754
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	0	1700
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg	0	1612
https://www.boorberg.de/images/icon_search.svg	0	1414
https://www.boorberg.de/scripts/SubjectTree.js?v=1449735121	0	1406
https://www.boorberg.de/css/magic-check.css	0	1372
https://www.boorberg.de/Scripts/WebForms/Focus.js	0	1352
http://cms.boorberg.de/Medien/leseprobe.svg	0	1298
https://www.boorberg.de/Scripts/WebForms/GridView.js	0	1172
https://www.boorberg.de/images/ajax_loader.gif	0	1136
https://www.boorberg.de/css/SideNav.css	0	1132
https://www.boorberg.de/Scripts/WebForms/DetailsView.js	0	1132
https://www.boorberg.de/images/arrow_down_white.svg	0	994
https://www.boorberg.de/css/validation.css	0	779
https://www.boorberg.de/App_Themes/default/default.css	0	660
https://www.boorberg.de/images/body_bg.gif	0	525
https://fast.fonts.net/t/1.css?apiType=css&projectid=48085a11-4c64-4b97-9cfe-ff58ef780fc7	604800000	341

Show Details

Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.

URL	Potential Savings (Ms)
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	211.38599980623
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	109.06000016257
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	108.22999989614

Show Details

Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.

URL	Location
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	line: 23

Show Details

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of boorberg.de. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.

The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.

Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.

`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.

`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.

ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.

`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.

Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.

`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.

`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.

ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.

`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.

ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.

`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.

`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.

Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.

List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.

Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.

`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.

`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Boorberg.de may provide assistance to deaf or hearing-impaired users with captions on videos.

`<video>` elements contain a `<track>` element with `[kind="description"]`
Boorberg.de may provide relevant information that dialogue cannot, by using audio descriptions.

ARIA

`[aria-*]` attributes are not valid or misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.

Failing Elements
ANMELDEN

Show Details

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.

Failing Elements
OK
RICHARD BOORBERG VERLAG
IMPRESSUM
ANMELDEN
CORONA: AKTUELLE INFORMATIONEN FÜR UNSERE KUNDINNEN UND KUNDEN
Inhaltsverzeichnis (PDF)
Leseprobe (PDF)
Buchservice
Verlag
Unternehmen
Stellenangebote
AGB
Datenschutz
Impressum
Shop
Kontakt
AGB
Widerrufsbelehrungen
Datenschutz
Ihre Meinung
Service
Corona
Wasserrecht
FAQ/Hilfe
Mediadaten
Kontakt
Konto
Anmelden
Ihre Vorteile
Sicher einkaufen
Datenschutz
Sichere Zahlungsmittel
SSL-Verschlüsselung
Zahlungsarten
SEPA-Lastschrift
Rechnungskauf

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Tables and lists

`<dl>`'s do not contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.

Failing Elements
Unser Produkt des Tages Modernisiertes Lernkonzept Die 15. Auflage dieses Buch…
Fachbereiche Themen
Ihre Vorteile Aktuelle Empfehlung

Show Details

Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.

Failing Elements
Anwaltschaft Bau/Vergabe Bund/Länder/Kommunen Dienst- und Tarifrecht Fachaka…
Private Sicherheit/Feuerwehr Schule und Recht Sozialrecht Steuerkanzleibedarf …

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Navigation

`[id]` attributes on active, focusable elements are not unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.

Failing Elements
Der Staat

Show Details

Some elements have a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

Failing Elements
Der Staat
Anwaltschaft
Bau/Vergabe
Bund/Länder/Kommunen
Dienst- und Tarifrecht
Fachakademie
Formularservice
Makler/Immobilienwirtschaft
Polizei
Private Sicherheit/Feuerwehr
Schule und Recht
Sozialrecht
Steuerkanzleibedarf
Steuerrecht
Studium und Referendariat
Wirtschaft
Wissenschaft

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Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.

Failing Elements
html

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Names and labels

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

Failing Elements
img
img
img
img
img

Show Details

`<input type="image">` elements do not have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.

Failing Elements
input

Show Details

Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.

Failing Elements
input

Show Details

Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Failing Elements
a
img
img
a

Show Details

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.

Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.

Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.

The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.

User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.

Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.

Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.

Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.

Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.

HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that boorberg.de should incorporate. This includes practices such as protecting pages with HTTPS.

Passing (11)
Failing (3)

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.

Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.

Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.

Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.

Name	Version
jQuery	2.1.4
jQuery UI	1.11.1
Modernizr	2.6.2
yepnope
Knockout	3.3.0

Show Details

Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.

No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.

Audits

Does not use HTTPS — 3 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.

Insecure URL
http://boorberg.de/
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg
http://cms.boorberg.de/Medien/leseprobe.svg

Show Details

Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.

Failing Anchors
img
Inhaltsverzeichnis (PDF)
img
Leseprobe (PDF)
Formularservice
Steuerkanzleibedarf
Buchservice

Show Details

Includes front-end JavaScript libraries with known security vulnerabilities — 6 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.

Library Version	Vulnerability Count	Highest Severity
SHOW DETAILS	4	Medium
SHOW DETAILS	1	High
SHOW DETAILS	1	Medium

Show Details

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for boorberg.de. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of boorberg.de on mobile screens.

Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.

Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.

Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.

Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.

Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.

Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.

robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

Failing Elements
img
img
img
img
img

Show Details

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of boorberg.de. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of boorberg.de on mobile screens.

Contains some content when JavaScript is not available
Apps should display alternative content for when JavaScript is disabled.

Fast and reliable

Page load is not fast enough on mobile networks — Interactive on simulated mobile network at 10.4 s
Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.

Current page does not respond with a 200 when offline
In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.

`start_url` does not respond with a 200 when offline
Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.

Installable

Does not use HTTPS — 3 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.

Insecure URL
http://boorberg.de/
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg
http://cms.boorberg.de/Medien/leseprobe.svg

Show Details

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.

Web app manifest does not meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data

PWA Optimized

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data

Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data

Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.

Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.

Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

Progressive Web App

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

URL: https://www.boorberg.de/

Updated: 15th July, 2020

1.90 seconds

First Contentful Paint (FCP)

20%

71%

9%

0.03 seconds

First Input Delay (FID)

98%

2%

0%

Simulate loading on mobile

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for boorberg.de. This includes details about optimizing page load times which can result in a better user experience.

Other

Estimated Input Latency — 40 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive boorberg.de as laggy when the latency is higher than 0.05 seconds.

Network Requests
Below is a list of network requests that were made during page load.

URL	Start Time (Ms)	End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://boorberg.de/	0	210.44500009157	478	0	301	text/html
https://www.boorberg.de/	210.86099999957	774.18200008105	19651	74450	200	text/html	Document
https://www.boorberg.de/css/fonts.css	792.28100006003	898.16199999768	1928	5933	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/css/normalize.css	792.57699998561	906.21000004467	3097	7708	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	792.76500002015	912.32500004116	20414	164537	200	text/css	Stylesheet
https://www.boorberg.de/css/font-awesome.min.css	793.31300000194	902.27600000799	7131	27479	200	text/css	Stylesheet
https://www.boorberg.de/css/validation.css	793.65400003735	903.05600001011	779	227	200	text/css	Stylesheet
https://www.boorberg.de/css/magic-check.css	793.92200009897	904.94999999646	1372	2662	200	text/css	Stylesheet
https://www.boorberg.de/css/SideNav.css	794.40400004387	902.78400003444	1132	970	200	text/css	Stylesheet
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	794.85700000077	907.49000001233	30596	84758	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/modernizr.js	795.02399999183	904.39800010063	4619	9288	200	application/javascript	Script
https://www.boorberg.de/scripts/jquery-ui.js	795.16700003296	1115.6460000202	112389	464435	200	application/javascript	Script
https://www.boorberg.de/scripts/knockout-3.3.0.js	795.62700004317	1010.8330000658	21251	55956	200	application/javascript	Script
https://www.boorberg.de/scripts/knockout.mapping-latest.js	795.96900008619	905.85300000384	3813	9386	200	application/javascript	Script
https://www.boorberg.de/scripts/common.js?v=1449735121	796.34200001601	905.39199998602	2845	8321	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	796.49199999403	915.21700005978	1754	2187	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	796.76599998493	908.47700007726	1869	3951	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	797.45399998501	910.67300003488	1700	4079	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	797.6160000544	910.36500001792	3927	13890	200	application/javascript	Script
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	797.95700008981	909.88699998707	3515	8291	200	application/javascript	Script
https://www.boorberg.de/App_Themes/default/colors.css	798.68500004523	919.00200000964	19545	92565	200	text/css	Stylesheet
https://www.boorberg.de/App_Themes/default/colors.min.css	799.42900000606	1020.7459999947	16266	73181	200	text/css	Stylesheet
https://www.boorberg.de/App_Themes/default/default.css	799.60800008848	1227.5970000774	660	32	200	text/css	Stylesheet
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	799.79800002184	1019.4340000162	61697	357754	200	application/x-javascript	Script
https://www.boorberg.de/ScriptResource.axd?d=tKmm0wSy00xVhKZi7faoJPJllFO-aqqyM3C7aacBWgWfHdBKWyhxPvXVoDzLrxHnD9rDC7eO8fXMgQwgu6XL8qa7eLvZBbuKkYuUbLXnW5RyTVRTZhLKCRhKUeHbqtKEnTJaYOyhP4yTbgrfZC0MEQ2&t=f2cd5c5	799.94000005536	1014.6980000427	15749	95654	200	application/x-javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebForms.js	800.33100000583	913.24700007681	4967	22408	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebUIValidation.js	800.67900009453	913.58900000341	6012	27150	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/MenuStandards.js	800.8320000954	911.12599999178	5412	27802	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/GridView.js	801.07100005262	909.39000004437	1172	1503	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/DetailsView.js	801.27699999139	911.41500009689	1132	1343	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/TreeView.js	801.40300001949	1222.5610000314	2469	9410	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/WebParts.js	801.54600006063	913.94600004423	5390	27246	200	application/javascript	Script
https://www.boorberg.de/Scripts/WebForms/Focus.js	802.17600008473	1230.1220000954	1352	3067	200	application/javascript	Script
https://www.boorberg.de/ScriptResource.axd?d=6Xvt7yBw_f6x28cpdZNH51qjRfdtcosdjfGr3QyL-pWPMRb1QPsoC0L2BrLT1uxsmzk_sAUrRlLSXK6X7c3KtvyosX81UTENf1_xtmLfj5Inv_L2wjgZ5Dy-7JSdsHMB6SvbaW0hzHZ1huFTQDh0-Q8APPNWHPjshmovxxNj9QDoY4UWn-j3T0Z74TjGrBME0&t=202584f9	802.2850000998	1225.3940000664	5530	25491	200	text/javascript	Script
https://www.boorberg.de/images/printheader.svg	1190.5170000391	1300.9060000768	27269	26800	200	image/svg+xml	Image
https://www.boorberg.de/images/header_portal_logo_0.svg	1190.9689999884	1301.9070000155	4770	4302	200	image/svg+xml	Image
https://www.boorberg.de/images/header_portal_logo_1.svg	1191.0940000089	1302.6379999937	4770	4302	200	image/svg+xml	Image
https://www.boorberg.de/images/icon_search.svg	1191.2580000935	1298.5080000944	1414	947	200	image/svg+xml	Image
https://www.boorberg.de/images/Buchservice_Logo.svg	1191.4260000922	1299.9600000912	2709	2241	200	image/svg+xml	Image
https://www.boorberg.de/images/ajax_loader.gif	1191.5940000908	1300.2590000397	1136	673	200	image/gif	Image
https://www.boorberg.de/scripts/SubjectTree.js?v=1449735121	1188.3990000933	1295.2800000785	1406	2547	200	application/javascript	Script
https://shop.boorberg.de/DownloadProxy/Default.aspx?size=l&p=9783415067578	1191.7420000536	1650.9680000599	5019	4144	200	image/jpeg	Image
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	1191.9380000327	1412.7240000525	317651	317401	200	image/jpeg	Image
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	1192.0740000205	1306.4599999925	219176	218925	200	image/jpeg	Image
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	1192.2500000801	2027.6030000532	211173	210923	200	image/jpeg	Image
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg	1192.4250000156	1301.5630000737	1612	1360	200	image/svg+xml	Image
http://cms.boorberg.de/Medien/leseprobe.svg	1193.7330000801	1403.4370000008	1298	1046	200	image/svg+xml	Image
https://www.boorberg.de/images/boorberg_shop_logo.svg	1193.8990000635	1300.6030000979	5835	5367	200	image/svg+xml	Image
https://shop.boorberg.de/DownloadProxy/Default.aspx?size=l&p=9783415064652	1194.0790000372	1649.8240000801	4705	3830	200	image/jpeg	Image
https://www.boorberg.de/css/print.less	1194.3310000934	1304.2720000958	1097	1772	200	text/css	Stylesheet
https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.css	1188.6660000309	1212.7630000468	1858	4064	200	text/css	Stylesheet
https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.js	1188.9519999968	1212.1200000402	7365	20808	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	1189.7820000304	1297.8120000334	29697	122744	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.orbit.js	1190.0519999908	1298.8520000363	4248	18558	200	application/javascript	Script
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.dropdown.js	1190.2150000678	1299.5930000907	3848	15004	200	application/javascript	Script
https://fast.fonts.net/t/1.css?apiType=css&projectid=48085a11-4c64-4b97-9cfe-ff58ef780fc7	900.89300007094	918.17000007723	341	0	200	text/css	Stylesheet
https://piwik.boorberg.de/piwik.js	1194.2000000272	1720.1030000579	23765	69339	200	application/javascript	Script
https://www.boorberg.de/App_Themes/default/colors.less	1229.8600000795	1501.0180000681	12695	92537	200	text/css	Stylesheet
https://www.boorberg.de/images/body_bg.gif	1554.7970000189	1661.5320000565	525	63	200	image/gif	Image
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	1559.9400000647	1771.3040000526	46218	45740	200	application/font-woff2	Font
https://www.boorberg.de/images/arrow_down_white.svg	1562.6979999943	1666.9270000421	994	527	200	image/svg+xml	Image
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	1564.4200000679	1673.9450000459	52810	52332	200	application/font-woff2	Font
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	1564.9100000737	1673.3090000926	39086	38608	200	application/font-woff2	Font
https://www.boorberg.de/images/arrow_right_bullet.png	1611.9180000387	1731.5220000455	3327	2863	200	image/png	Image
https://www.boorberg.de/images/arrow_right_bullet_active.png	1613.5910000885	1730.9090000344	17796	17331	200	image/png	Image
https://www.boorberg.de/PartialUpdatePanelLoader.ashx?__t=1594801045232	1828.7530000089	1948.0420000618	1994	1620	200	text/html	XHR
https://www.boorberg.de/PartialUpdatePanelLoader.ashx?__t=1594801045239	1830.7760000462	2467.0150000602	1854	1117	200	text/html	XHR
https://piwik.boorberg.de/piwik.php?action_name=www.boorberg.de%2Fboorberg.shop&idsite=3&rec=1&r=459335&h=1&m=17&s=25&url=https%3A%2F%2Fwww.boorberg.de%2F&_id=05d2da8f2a5233dd&_idts=1594801045&_idvc=1&_idn=0&_refts=0&_viewts=1594801045&send_image=1&cookie=1&res=360x640&gt_ms=564&pv_id=PEM9fu	1933.2560000475	2070.7780000521	295	43	200	image/gif	Image
https://www.boorberg.de/images/cart_black.svg	1957.2700000135	2062.9860000918	1628	1160	200	image/svg+xml	Image
https://www.boorberg.de/images/notepad_black.svg	2482.1569999913	2604.0930000599	1621	1153	200	image/svg+xml	Image

Show Details

Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
807.679	9.621
821.749	13.241
948.138	7.945
958.556	21.428
1161.855	59.477
1536.321	44.176
1580.52	37.018
1620.31	5.956
1631.178	15.874
1647.424	40.353
1687.959	177.143
1867.439	13.765
1884.637	8.103
1904.057	33.699
1938.535	24.908
1979.115	11.091
1990.257	7.086
2069.062	17.1
2086.345	16.386
2106.137	14.028
2120.452	19.923
2140.431	5.784
2170.49	15.635
2186.25	16.568
2203.391	16.497
2219.929	16.733
2236.703	16.507
2253.25	16.254
2269.615	16.576
2286.237	16.872
2303.279	16.334
2319.717	17.185
2336.949	16.25
2353.265	16.377
2369.757	16.757
2386.601	16.549
2403.196	16.604
2419.848	16.455
2436.349	16.636
2453.047	16.587
2469.985	16.654
2486.688	16.15
2502.861	5.734
2508.646	11.134
2519.99	16.503
2536.535	16.519
2553.167	16.412
2569.644	17.557
2587.323	15.824
2603.181	16.604
2619.832	16.397
2639.059	13.866
2653.279	16.407
2669.75	17.082
2686.885	16.07
2702.999	16.885
2719.927	16.363
2736.34	17.292
2753.678	16.004
2769.72	16.68
2786.447	16.471
2802.963	16.575
2819.668	17.116
2836.905	16.15
2853.135	16.479
2869.652	16.607

Show Details

Diagnostics
Below is a collection of useful page vitals.
View Data

Metrics
Below is a collection of metrics.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. Boorberg.de should consider serving more appropriate-sized images.

Defer offscreen images — Potential savings of 36 KiB
Time to Interactive can be slowed down by resources on the page. Boorberg.de should consider lazy-loading offscreen and hidden images.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/images/printheader.svg	26800	26800
https://www.boorberg.de/images/header_portal_logo_1.svg	4302	4302
https://shop.boorberg.de/DownloadProxy/Default.aspx?size=l&p=9783415064652	3830	3830
https://www.boorberg.de/images/Buchservice_Logo.svg	2241	2241

Show Details

Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.

Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.

Initial server response time was short — Root document took 560 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Boorberg.de should avoid multiple or unnecessary page redirects.

URL	Time Spent (Ms)
(Start) http://boorberg.de/	0
https://www.boorberg.de/	630

Show Details

Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Boorberg.de should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.

Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Diagnostics

Avoids enormous network payloads — Total size was 1,421 KiB
Large network payloads can cost users money and are linked to long load times.

URL	Transfer Size (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317651
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	219176
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	211173
https://www.boorberg.de/scripts/jquery-ui.js	112389
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	52810
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	46218
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	39086
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	30596
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697

Show Details

Avoids an excessive DOM size — 552 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.

Statistic	Element	Value
Total DOM Elements		552
Maximum DOM Depth	SHOW DETAILS	19
Maximum Child Elements	SHOW DETAILS	35

Show Details

Avoid chaining critical requests — 43 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Boorberg.de should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.

JavaScript execution time — 1.2 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

URL	Total CPU Time (Ms)	Script Evaluation (Ms)	Script Parse (Ms)
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	3152.34	127.816	11.776
https://www.boorberg.de/	1371.948	517.2	19.776
Unattributable	425.188	7.696	0.816
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	216.884	155.852	7.028
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	211.412	157.776	25.68
https://www.boorberg.de/scripts/jquery-ui.js	146.352	82.976	30.784
https://piwik.boorberg.de/piwik.js	105.724	90.268	9.844

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Keep request counts low and transfer sizes small — 70 requests • 1,421 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.

Resource Type	Requests	Transfer Size (Bytes)
Total	70	1454618
Image	21	834723
Script	28	369489
Font	3	138114
Stylesheet	14	88315
Document	1	19651
Other	3	4326
Media	0	0
Third-party	3	9564

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Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.

Third-Party	Transfer Size (Bytes)	Main-Thread Blocking Time (Ms)
SHOW DETAILS	9223	0
SHOW DETAILS	341	0

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Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.

Element
img

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Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.

Element	CLS Contribution
Hitschold, Hans-Joachim · Reiners, Markus Der Staat RBV fotolia Bacho Foto - Fo…	0.13344560100509
Unser Produkt des Tages Modernisiertes Lernkonzept Die 15. Auflage dieses Buch…	0.093559782608696
Aktualisiere... …	0.0024054236778846
KARRIERE BEI BOORBERG SERVICES	0.0007506103515625
Warenkorb	0.00012927369397096

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Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.

Avoid long main-thread tasks — 20 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.

URL	Start Time (Ms)	Duration (Ms)
https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.js	14042	354
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	11970	177
https://www.boorberg.de/scripts/jquery-ui.js	9690	119
https://piwik.boorberg.de/piwik.js	3720	100
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	6270	86
https://www.boorberg.de/	630	81
https://www.boorberg.de/	1613	74
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	15852	70
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	14858	69
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	16476	69
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	16211	68
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	16343	68
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	16808	68
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	13678	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	14462	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	14726	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	15102	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	15367	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	15500	67
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	16609	67

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Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.

Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Cumulative Layout Shift — 0.23
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Max Potential First Input Delay — 210 ms
Users could experience a delay when interacting with the page.

Opportunities

Minify CSS — Potential savings of 9 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Boorberg.de should consider minifying CSS files.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/App_Themes/default/colors.css	19545	4388
https://www.boorberg.de/App_Themes/default/colors.less	12695	2860
https://www.boorberg.de/scripts/foundation/css/normalize.css	3097	2306

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Minify JavaScript — Potential savings of 72 KiB
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Boorberg.de should consider minifying JS files.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/jquery-ui.js	112389	37156
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697	27848
https://www.boorberg.de/ScriptResource.axd?d=tKmm0wSy00xVhKZi7faoJPJllFO-aqqyM3C7aacBWgWfHdBKWyhxPvXVoDzLrxHnD9rDC7eO8fXMgQwgu6XL8qa7eLvZBbuKkYuUbLXnW5RyTVRTZhLKCRhKUeHbqtKEnTJaYOyhP4yTbgrfZC0MEQ2&t=f2cd5c5	15749	5545
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697	3513

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Remove unused CSS — Potential savings of 59 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Boorberg.de should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	20414	19218
https://www.boorberg.de/App_Themes/default/colors.css	19545	15831
https://www.boorberg.de/App_Themes/default/colors.min.css	16266	13137
https://www.boorberg.de/App_Themes/default/colors.less	12695	12695

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Metrics

First Contentful Paint — 6.9 s
The time taken for the first image or text on the page to be rendered.

Speed Index — 11.2 s
The time taken for the page contents to be visibly populated.

Largest Contentful Paint — 10.6 s
The timing of the largest text or image that is painted.

Time to Interactive — 11.8 s
The time taken for the page to become fully interactive.

Total Blocking Time — 620 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

First CPU Idle — 8.4 s
The time taken for the page's main thread to be quiet enough to handle input.

First Meaningful Paint — 8.4 s
The time taken for the primary content of the page to be rendered.

First Contentful Paint (3G) — 13394.5 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 4,380 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Boorberg.de should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.

URL	Transfer Size (Bytes)	Potential Savings (Ms)
https://www.boorberg.de/css/fonts.css	1928	180
https://www.boorberg.de/scripts/foundation/css/normalize.css	3097	630
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	20414	1080
https://www.boorberg.de/css/font-awesome.min.css	7131	630
https://www.boorberg.de/css/validation.css	779	480
https://www.boorberg.de/css/magic-check.css	1372	480
https://www.boorberg.de/css/SideNav.css	1132	180
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	30596	1080
https://www.boorberg.de/scripts/foundation/js/modernizr.js	4619	330
https://www.boorberg.de/scripts/jquery-ui.js	112389	2580
https://www.boorberg.de/scripts/knockout-3.3.0.js	21251	780
https://www.boorberg.de/scripts/knockout.mapping-latest.js	3813	180
https://www.boorberg.de/scripts/common.js?v=1449735121	2845	180
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	1754	180
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	1869	180
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	1700	180
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	3927	180
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	3515	180
https://www.boorberg.de/App_Themes/default/colors.css	19545	780
https://www.boorberg.de/App_Themes/default/colors.min.css	16266	780
https://www.boorberg.de/App_Themes/default/default.css	660	180

Show Details

Remove unused JavaScript — Potential savings of 151 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://www.boorberg.de/scripts/jquery-ui.js	112389	93482
https://www.boorberg.de/ScriptResource.axd?d=h6zgbMmNgDQ15vYJXGy2n7tPSqnOZRRsaQzrLK38-QPwFcg7cNFU0Z4wAiOb6u6_DIlxaHPIHGjXW5FHnBv_UzLvwnw1G70KWj7TiVQYlHGn68bDp4c0johtyW_eOcm3cZ_TdrQAOw4jwKG9_iQidQ2&t=f2cd5c5	61697	38157
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	29697	23196

Show Details

Efficiently encode images — Potential savings of 623 KiB
Unoptimized images can consume more cellular data than what is necessary.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317401	279576
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	210923	182003
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	218925	176501

Show Details

Serve images in next-gen formats — Potential savings of 693 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.

URL	Resource Size (Bytes)	Potential Savings (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	317401	298467
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	210923	198507
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	218925	195573
https://www.boorberg.de/images/arrow_right_bullet_active.png	17331	17115

Show Details

Diagnostics

Serve static assets with an efficient cache policy — 56 resources found
Boorberg.de can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.

URL	Cache TTL (Ms)	Transfer Size (Bytes)
https://cms.boorberg.de/uploads/bd615073-2a71-44e8-bd1b-a18f885cf983.jpg	0	317651
https://cms.boorberg.de/uploads/5fe630af-3cc7-4ef0-a6be-30b6c91a02b8.jpg	0	219176
https://cms.boorberg.de/uploads/07f9f451-1a1b-4634-94d0-fbd993506096.jpg	0	211173
https://www.boorberg.de/scripts/jquery-ui.js	0	112389
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	0	52810
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	0	46218
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	0	39086
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	0	30596
https://www.boorberg.de/scripts/foundation/js/foundation.min.js	0	29697
https://www.boorberg.de/images/printheader.svg	0	27269
https://piwik.boorberg.de/piwik.js	0	23765
https://www.boorberg.de/scripts/knockout-3.3.0.js	0	21251
https://www.boorberg.de/scripts/foundation/css/foundation.min.css	0	20414
https://www.boorberg.de/App_Themes/default/colors.css	0	19545
https://www.boorberg.de/images/arrow_right_bullet_active.png	0	17796
https://www.boorberg.de/App_Themes/default/colors.min.css	0	16266
https://www.boorberg.de/css/font-awesome.min.css	0	7131
https://www.boorberg.de/Scripts/WebForms/WebUIValidation.js	0	6012
https://www.boorberg.de/images/boorberg_shop_logo.svg	0	5835
https://www.boorberg.de/Scripts/WebForms/MenuStandards.js	0	5412
https://www.boorberg.de/Scripts/WebForms/WebParts.js	0	5390
https://www.boorberg.de/Scripts/WebForms/WebForms.js	0	4967
https://www.boorberg.de/images/header_portal_logo_0.svg	0	4770
https://www.boorberg.de/images/header_portal_logo_1.svg	0	4770
https://www.boorberg.de/scripts/foundation/js/modernizr.js	0	4619
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.orbit.js	0	4248
https://www.boorberg.de/scripts/iucon/iucon.core.js?v=1463447249	0	3927
https://www.boorberg.de/scripts/foundation/js/foundation/foundation.dropdown.js	0	3848
https://www.boorberg.de/scripts/knockout.mapping-latest.js	0	3813
https://www.boorberg.de/scripts/iucon/iucon.common.js?v=1463447249	0	3515
https://www.boorberg.de/images/arrow_right_bullet.png	0	3327
https://www.boorberg.de/scripts/foundation/css/normalize.css	0	3097
https://www.boorberg.de/scripts/common.js?v=1449735121	0	2845
https://www.boorberg.de/images/Buchservice_Logo.svg	0	2709
https://www.boorberg.de/Scripts/WebForms/TreeView.js	0	2469
https://www.boorberg.de/css/fonts.css	0	1928
https://www.boorberg.de/scripts/iucon/iucon.fileupload.js?v=1463447249	0	1869
https://www.boorberg.de/scripts/iucon/iucon.helpers.js?v=1463447249	0	1754
https://www.boorberg.de/scripts/iucon/iucon.transform.js?v=1463447249	0	1700
https://www.boorberg.de/images/cart_black.svg	0	1628
https://www.boorberg.de/images/notepad_black.svg	0	1621
http://cms.boorberg.de/Medien/inhaltsverzeichnis.svg	0	1612
https://www.boorberg.de/images/icon_search.svg	0	1414
https://www.boorberg.de/scripts/SubjectTree.js?v=1449735121	0	1406
https://www.boorberg.de/css/magic-check.css	0	1372
https://www.boorberg.de/Scripts/WebForms/Focus.js	0	1352
http://cms.boorberg.de/Medien/leseprobe.svg	0	1298
https://www.boorberg.de/Scripts/WebForms/GridView.js	0	1172
https://www.boorberg.de/images/ajax_loader.gif	0	1136
https://www.boorberg.de/css/SideNav.css	0	1132
https://www.boorberg.de/Scripts/WebForms/DetailsView.js	0	1132
https://www.boorberg.de/images/arrow_down_white.svg	0	994
https://www.boorberg.de/css/validation.css	0	779
https://www.boorberg.de/App_Themes/default/default.css	0	660
https://www.boorberg.de/images/body_bg.gif	0	525
https://fast.fonts.net/t/1.css?apiType=css&projectid=48085a11-4c64-4b97-9cfe-ff58ef780fc7	604800000	341

Show Details

Minimize main-thread work — 5.9 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

Category	Time Spent (Ms)
Rendering	3015.84
Script Evaluation	1201.876
Other	623.672
Style & Layout	582.968
Parse HTML & CSS	248.6
Script Parsing & Compilation	177.424

Show Details

Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.

URL	Potential Savings (Ms)
https://www.boorberg.de/css/fonts/00ff2c45-5365-47e5-8f97-6bcb07cd7c0c.woff2	211.36399998795
https://www.boorberg.de/css/fonts/6e058ee6-a4ba-40f7-b468-2954ab88a94e.woff2	109.52499997802
https://www.boorberg.de/css/fonts/f5d54927-a125-4d7e-94c4-b366d62976cd.woff2	108.39900001884

Show Details

Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.

URL	Location
https://www.boorberg.de/scripts/foundation/js/vendor/jquery.js	line: 23