Run 4 summary

Summary

Metric	Value
Page metrics
Performance score	78
Total page size	2.0 MB
Requests	94
Timing metrics
TTFB	495 ms
First Paint	935 ms
Fully Loaded	6.173 s
Google Web Vitals
TTFB	495 ms
First Contentful Paint (FCP)	931 ms
Largest Contentful Paint (LCP)	936 ms
128.78 ms
Visual Metrics
First Visual Change	1.000 s
Speed Index	1.187 s
Visual Complete 85%	1.000 s
Visual Complete 99%	3.466 s
Last Visual Change	6.033 s

Waterfall

Video

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

1 sFirst Contentful Paint 931 msLCP <DIV> 936 msDOM Content Loaded Time 947 msFirst Visual Change 1.000 sVisual Complete 85% 1.000 sHeading 1.000 s

1.1 smwStartup 1.045 sLargest Image 1.066 s

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2.6 swbInitStart 2.599 s

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3.5 sPage Load Time 3.417 sVisual Complete 95% 3.433 sVisual Complete 99% 3.466 swbInitEnd 3.497 s

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6.1 sLast Visual Change 6.033 s

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on privacy and best practices. Tested using Coach-core version 8.1.1.

Coach score

• Total score 79
• Performance score 78
• Privacy score 82
• Best practice score 75

Performance advice (78)

Show/hide details

Title	Advice	Score
Avoid slowing down the critical rendering path (avoidRenderBlocking)	The style https://www.wikidata.org/w/load.php?lang=en&modules=ext.kartographer.style%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikidata-org.badges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cjquery.wikibase.toolbar.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.alltargets%2Cdesktop&only=styles&skin=vector-2022 is larger than the magic number TCP window size 14.5 kB. Make the file smaller and the page will render faster. The page has 1 render blocking CSS request and 0 blocking JavaScript request inside of head.	95
Description: The critical rendering path is what the browser needs to do to start rendering the page. Every file requested inside of the head element will postpone the rendering of the page, because the browser need to do the request. Avoid loading JavaScript synchronously inside of the head (you should not need JavaScript to render the page), request files from the same domain as the main document (to avoid DNS lookups) and inline CSS for really fast rendering and a short rendering path.
Offenders: https://www.wikidata.org/w/load.php...ta.org/w/load.php
Inline CSS for faster first render (inlineCss)	The page has both inline CSS and CSS requests even though it uses a HTTP/2-ish connection. If you have many users on slow connections, it can be better to only inline the CSS. Run your own tests and check the waterfall graph to see what happens.	95
Description: In the early days of the Internet, inlining CSS was one of the ugliest things you can do. That has changed if you want your page to start rendering fast for your user. Always inline the critical CSS when you use HTTP/1 and HTTP/2 (avoid doing CSS requests that block rendering) and lazy load and cache the rest of the CSS. It is a little more complicated when using HTTP/2. Does your server support HTTP push? Then maybe that can help. Do you have a lot of users on a slow connection and are serving large chunks of HTML? Then it could be better to use the inline technique, becasue some servers always prioritize HTML content over CSS so the user needs to download the HTML first, before the CSS is downloaded.
Avoid doing redirects (assetsRedirects)	The page has 2 redirects. 1 of the redirects are from the base domain, please fix them! 1 request are from other domains, it could be 3rd-party assets doing unnecessary redirects. :(	80
Description: A redirect is one extra step for the user to download the asset. Avoid that if you want to be fast. Redirects are even more of a showstopper on mobile.
Offenders: https://www.wikidata.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0 https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
Avoid extra requests by setting cache headers (cacheHeaders)	The page has 42 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 611.8 kB the next access.	0
Description: The easiest way to make your page fast is to avoid doing requests to the server. Setting a cache header on your server response will tell the browser that it doesn't need to download the asset again during the configured cache time! Always try to set a cache time if the content doesn't change for every request.
Offenders: https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Cityscape_Berlin.jpg/2...yscape_Berlin.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Geschichte_der_Hauptst...A_4.0%29.webm.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Google_Timelapse-_Berl..._Germany.webm.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Berlin_by_Senitnel-2.j...by_Senitnel-2.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Locator_map_Berlin_in_...n_Germany.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Berlin_in_Germany_and_...ermany_and_EU.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Berlin%2C_administrati...colors%29.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Karte_Berlin_Landnutzu...n_Landnutzung.png https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Flag_of_Berlin.svg/220...of_Berlin.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DEU_Berlin_COA.svg/220...erlin_COA.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/150524_Konzerthaus_Ber...ht%29_-_clone.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Collage_Berlin2.jpg/22...llage_Berlin2.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wv_Berlin_banner3.jpg/...erlin_banner3.jpg https://www.wikidata.org/wiki/Special:EntityData/Q64.json?revision=2328802221 https://www.wikidata.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0 https://upload.wikimedia.org/wikipedia/commons/1/1b/Semi-protection-shackle.svg https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://maps.wikimedia.org/v4/marker/pin-l-marker+0050d0.png https://www.wikidata.org/w/api.php...ata.org/w/api.php https://www.wikidata.org/w/api.php...ata.org/w/api.php https://measure-eqiad.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-eqiad.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-eqiad.wikimedia.org/measure...media.org/measure
Long cache headers is good (cacheHeadersLong)	The page has 27 requests that have a shorter cache time than 30 days (but still a cache time).	73
Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version.
Offenders: https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://www.wikidata.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://maps.wikimedia.org/img/osm-intl,13,52.516666666667,13.383333333333,310x1...33333,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.43766,13.76104,310x180.png...76104,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.6754,13.47944,310x180.png...47944,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.33859,13.64817,310x180.png...64817,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.41961,13.08825,310x180.png...08825,310x180.png https://maps.wikimedia.org/osm-intl/13/4400/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4400/2687.png?lang=en https://maps.wikimedia.org/osm-intl/13/4399/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4401/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4399/2687.png?lang=en https://maps.wikimedia.org/osm-intl/13/4401/2687.png?lang=en https://maps.wikimedia.org/osm-intl/13/4408/2689.png?lang=en https://maps.wikimedia.org/osm-intl/13/4409/2689.png?lang=en https://maps.wikimedia.org/osm-intl/13/4408/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4409/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4402/2680.png?lang=en https://maps.wikimedia.org/osm-intl/13/4403/2680.png?lang=en https://maps.wikimedia.org/osm-intl/13/4402/2681.png?lang=en https://maps.wikimedia.org/osm-intl/13/4403/2681.png?lang=en https://maps.wikimedia.org/osm-intl/13/4406/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4405/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4407/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4393/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4394/2690.png?lang=en
Total JavaScript size shouldn't be too big (javascriptSize)	The total JavaScript transfer size is 789.8 kB. This is quite large.	50
Description: A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks?
Offenders: URL Transfer size Content size https://www.wikidata.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 21.4 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 5.5 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 17.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 633.1 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 87.2 KB 0 b https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.3 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 2.4 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 3.1 KB 0 b
Make each CSS response small (optimalCssSize)	https://www.wikidata.org/w/load.php?lang=en&modules=ext.kartographer.style%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikidata-org.badges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cjquery.wikibase.toolbar.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.alltargets%2Cdesktop&only=styles&skin=vector-2022 size is 31.5 kB (31526) and that is bigger than the limit of 14.5 kB. Try to make the CSS files fit into 14.5 KB.	90
Description: Make CSS responses small to fit into the magic number TCP window size of 14.5 KB. The browser can then download the CSS faster and that will make the page start rendering earlier.
Offenders: URL Transfer size Content size https://www.wikidata.org/w/load.php...ta.org/w/load.php 30.8 KB 0 b
Total page size shouldn't be too big (pageSize)	The page total transfer size is 2.1 MB, which is more than the coach limit of 2 MB. That is really big and you need to make it smaller.	0
Description: Avoid having pages that have a transfer size over the wire of more than 2 MB (desktop) and 1 MB (mobile) because that is really big and will hurt performance and will make the page expensive for the user if she/he pays for the bandwidth.
Offenders: URL Transfer size Content size https://www.wikidata.org/wiki/Q64 125.4 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 30.8 KB 0 b https://www.wikidata.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 21.4 KB 0 b https://www.wikidata.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 2.4 KB 0 b https://www.wikidata.org/static/images/icons/wikidatawiki.svg 1.2 KB 0 b https://www.wikidata.org/static/images/mobile/copyright/wikidatawiki-wordmark.svg 1.4 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Cityscape_Berlin.jpg/2...yscape_Berlin.jpg 9.1 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Geschichte_der_Hauptst...A_4.0%29.webm.jpg 9.5 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Google_Timelapse-_Berl..._Germany.webm.jpg 13.1 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Berlin_by_Senitnel-2.j...by_Senitnel-2.jpg 27.6 KB 0 b https://maps.wikimedia.org/img/osm-intl,13,52.516666666667,13.383333333333,310x1...33333,310x180.png 27.3 KB 0 b https://maps.wikimedia.org/img/osm-intl,13,52.43766,13.76104,310x180.png...76104,310x180.png 13.1 KB 0 b https://maps.wikimedia.org/img/osm-intl,13,52.6754,13.47944,310x180.png...47944,310x180.png 13.7 KB 0 b https://maps.wikimedia.org/img/osm-intl,13,52.33859,13.64817,310x180.png...64817,310x180.png 18.4 KB 0 b https://maps.wikimedia.org/img/osm-intl,13,52.41961,13.08825,310x180.png...08825,310x180.png 16.5 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Locator_map_Berlin_in_...n_Germany.svg.png 42.2 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Berlin_in_Germany_and_...ermany_and_EU.png 25.1 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Berlin%2C_administrati...colors%29.svg.png 47.7 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Karte_Berlin_Landnutzu...n_Landnutzung.png 96.4 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Flag_of_Berlin.svg/220...of_Berlin.svg.png 4.2 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DEU_Berlin_COA.svg/220...erlin_COA.svg.png 31.1 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/150524_Konzerthaus_Ber...ht%29_-_clone.jpg 14.1 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Collage_Berlin2.jpg/22...llage_Berlin2.jpg 27.5 KB 0 b https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wv_Berlin_banner3.jpg/...erlin_banner3.jpg 6.7 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.4 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 5.5 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 17.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 633.1 KB 0 b https://www.wikidata.org/wiki/Special:EntityData/Q64.json?revision=2328802221 78.8 KB 0 b https://www.wikidata.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0 1.0 KB 0 b https://upload.wikimedia.org/wikipedia/commons/1/1b/Semi-protection-shackle.svg 1.5 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.3 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.3 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.3 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 1.2 KB 0 b https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.3 KB 0 b https://www.wikidata.org/w/extensions/Kartographer/lib/external/mapbox/images/icons.svg?1f78f 3.1 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 87.2 KB 0 b https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.3 KB 0 b https://maps.wikimedia.org/osm-intl/13/4400/2686.png?lang=en 31.3 KB 0 b https://maps.wikimedia.org/osm-intl/13/4400/2687.png?lang=en 30.2 KB 0 b https://maps.wikimedia.org/osm-intl/13/4399/2686.png?lang=en 29.4 KB 0 b https://maps.wikimedia.org/osm-intl/13/4401/2686.png?lang=en 33.0 KB 0 b https://maps.wikimedia.org/osm-intl/13/4399/2687.png?lang=en 29.4 KB 0 b https://maps.wikimedia.org/osm-intl/13/4401/2687.png?lang=en 31.9 KB 0 b https://maps.wikimedia.org/v4/marker/pin-l-marker+0050d0.png 2.0 KB 0 b https://www.wikidata.org/w/skins/Vector/resources/skins.vector.styles/images/lin...r-progressive.svg 1.2 KB 0 b https://maps.wikimedia.org/osm-intl/13/4408/2689.png?lang=en 18.3 KB 0 b https://maps.wikimedia.org/osm-intl/13/4409/2689.png?lang=en 13.0 KB 0 b https://maps.wikimedia.org/osm-intl/13/4408/2690.png?lang=en 21.4 KB 0 b https://maps.wikimedia.org/osm-intl/13/4409/2690.png?lang=en 16.3 KB 0 b https://maps.wikimedia.org/osm-intl/13/4402/2680.png?lang=en 11.0 KB 0 b https://maps.wikimedia.org/osm-intl/13/4403/2680.png?lang=en 11.2 KB 0 b https://maps.wikimedia.org/osm-intl/13/4402/2681.png?lang=en 16.5 KB 0 b https://maps.wikimedia.org/osm-intl/13/4403/2681.png?lang=en 23.6 KB 0 b https://maps.wikimedia.org/osm-intl/13/4406/2693.png?lang=en 25.2 KB 0 b https://maps.wikimedia.org/osm-intl/13/4405/2693.png?lang=en 19.0 KB 0 b https://maps.wikimedia.org/osm-intl/13/4407/2693.png?lang=en 6.0 KB 0 b https://maps.wikimedia.org/osm-intl/13/4393/2690.png?lang=en 21.8 KB 0 b https://maps.wikimedia.org/osm-intl/13/4394/2690.png?lang=en 17.1 KB 0 b https://www.wikidata.org/w/api.php...ata.org/w/api.php 100.8 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 2.4 KB 0 b https://www.wikidata.org/w/load.php...ta.org/w/load.php 3.1 KB 0 b https://www.wikidata.org/static/apple-touch/wikidata.png 1.5 KB 0 b https://www.wikidata.org/static/favicon/wikidata.ico 1.8 KB 0 b https://www.wikidata.org/w/api.php...ata.org/w/api.php 37.7 KB 0 b https://measure-eqiad.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-codfw.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-esams.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-drmrs.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-ulsfo.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-magru.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-eqsin.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-codfw.wikimedia.org/measure...media.org/measure 920 B 0 b https://measure-esams.wikimedia.org/measure...media.org/measure 920 B 0 b 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Don't use private headers on static content (privateAssets)	The page has 4 requests with private headers. The main page has a private header. It could be right in some cases where the user can be logged in and served specific content. But if your asset is static it should never be private. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone.	70
Description: If you set private headers on content, that means that the content are specific for that user. Static content should be able to be cached and used by everyone. Avoid setting the cache header to private.
Offenders: https://www.wikidata.org/wiki/Q64 https://www.wikidata.org/wiki/Special:EntityData/Q64.json?revision=2328802221 https://www.wikidata.org/w/api.php...ata.org/w/api.php https://www.wikidata.org/w/api.php...ata.org/w/api.php

Best practice advice (75)

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Title	Advice	Score
Cumulative Layout Shift (cumulativeLayoutShift)	Layout Shift is not supported in this browser	0
Description: Cumulative Layout Shift measures the sum total of all individual layout shift scores for unexpected layout shift that occur. The metric is measuring visual stability by quantify how often users experience unexpected layout shifts. It is one of Google Web Vitals.
Do not send too long headers (longHeaders)	https://www.wikidata.org/wiki/Q64 has a header link that is 719 characters long. https://www.wikidata...ta.org/w/load.php has a header sourcemap that is 2990 characters long.	98
Description: Do not send response headers that are too long.
Offenders: https://www.wikidata.org/wiki/Q64 https://www.wikidata.org/w/load.php...ta.org/w/load.php
Avoid too many third party requests (thirdParty)	The page do more requests to third party domains (62 requests and 894.8 kB) then first party (32 requests and 1.2 MB). The regex .*wikidata.* was used to calculate first/third party requests.	50
Description: Do not load most of your content from third party URLs.
Avoid unnecessary headers (unnecessaryHeaders)	There are 25 responses that sets both a max-age and expires header. There are 94 responses that sets a server header.	0
Description: Do not send headers that you don't need. We look for p3p, cache-control and max-age, pragma, server and x-frame-options headers. Have a look at Andrew Betts - Headers for Hackers talk as a guide https://www.youtube.com/watch?v=k92ZbrY815c or read https://www.fastly.com/blog/headers-we-dont-want.
Offenders: https://www.wikidata.org/wiki/Q64 https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://www.wikidata.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://www.wikidata.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://www.wikidata.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://www.wikidata.org/static/images/icons/wikidatawiki.svg https://www.wikidata.org/static/images/icons/wikidatawiki.svg https://www.wikidata.org/static/images/mobile/copyright/wikidatawiki-wordmark.svg https://www.wikidata.org/static/images/mobile/copyright/wikidatawiki-wordmark.svg https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Cityscape_Berlin.jpg/2...yscape_Berlin.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Geschichte_der_Hauptst...A_4.0%29.webm.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Google_Timelapse-_Berl..._Germany.webm.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Berlin_by_Senitnel-2.j...by_Senitnel-2.jpg https://maps.wikimedia.org/img/osm-intl,13,52.516666666667,13.383333333333,310x1...33333,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.43766,13.76104,310x180.png...76104,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.6754,13.47944,310x180.png...47944,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.33859,13.64817,310x180.png...64817,310x180.png https://maps.wikimedia.org/img/osm-intl,13,52.41961,13.08825,310x180.png...08825,310x180.png https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Locator_map_Berlin_in_...n_Germany.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Berlin_in_Germany_and_...ermany_and_EU.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Berlin%2C_administrati...colors%29.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Karte_Berlin_Landnutzu...n_Landnutzung.png https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Flag_of_Berlin.svg/220...of_Berlin.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DEU_Berlin_COA.svg/220...erlin_COA.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/150524_Konzerthaus_Ber...ht%29_-_clone.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Collage_Berlin2.jpg/22...llage_Berlin2.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wv_Berlin_banner3.jpg/...erlin_banner3.jpg https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/wiki/Special:EntityData/Q64.json?revision=2328802221 https://www.wikidata.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0 https://upload.wikimedia.org/wikipedia/commons/1/1b/Semi-protection-shackle.svg https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://www.wikidata.org/w/extensions/Kartographer/lib/external/mapbox/images/icons.svg?1f78f https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://maps.wikimedia.org/osm-intl/13/4400/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4400/2687.png?lang=en https://maps.wikimedia.org/osm-intl/13/4399/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4401/2686.png?lang=en https://maps.wikimedia.org/osm-intl/13/4399/2687.png?lang=en https://maps.wikimedia.org/osm-intl/13/4401/2687.png?lang=en https://maps.wikimedia.org/v4/marker/pin-l-marker+0050d0.png https://www.wikidata.org/w/skins/Vector/resources/skins.vector.styles/images/lin...r-progressive.svg https://maps.wikimedia.org/osm-intl/13/4408/2689.png?lang=en https://maps.wikimedia.org/osm-intl/13/4409/2689.png?lang=en https://maps.wikimedia.org/osm-intl/13/4408/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4409/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4402/2680.png?lang=en https://maps.wikimedia.org/osm-intl/13/4403/2680.png?lang=en https://maps.wikimedia.org/osm-intl/13/4402/2681.png?lang=en https://maps.wikimedia.org/osm-intl/13/4403/2681.png?lang=en https://maps.wikimedia.org/osm-intl/13/4406/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4405/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4407/2693.png?lang=en https://maps.wikimedia.org/osm-intl/13/4393/2690.png?lang=en https://maps.wikimedia.org/osm-intl/13/4394/2690.png?lang=en https://www.wikidata.org/w/api.php...ata.org/w/api.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/w/load.php...ta.org/w/load.php https://www.wikidata.org/static/apple-touch/wikidata.png https://www.wikidata.org/static/apple-touch/wikidata.png https://www.wikidata.org/static/favicon/wikidata.ico https://www.wikidata.org/static/favicon/wikidata.ico https://www.wikidata.org/w/api.php...ata.org/w/api.php https://measure-eqiad.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-eqiad.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-magru.wikimedia.org/measure...media.org/measure https://measure-eqsin.wikimedia.org/measure...media.org/measure https://measure-ulsfo.wikimedia.org/measure...media.org/measure https://measure-esams.wikimedia.org/measure...media.org/measure https://measure-drmrs.wikimedia.org/measure...media.org/measure https://measure-codfw.wikimedia.org/measure...media.org/measure https://measure-eqiad.wikimedia.org/measure...media.org/measure

Privacy advice (82)

Show/hide details

Title	Advice	Score
Use a good Content-Security-Policy header to make sure you you avoid Cross Site Scripting (XSS) attacks. (contentSecurityPolicyHeader)	Set a Content-Security-Policy header to make sure you are not open for Cross Site Scripting (XSS) attacks. You can start with setting a Content-Security-Policy-Report-Only header, that will only report the violation, not stop the download.	0
Description: Content Security Policy is delivered via a HTTP response header, and defines approved sources of content that the browser may load. It can be an effective countermeasure to Cross Site Scripting (XSS) attacks and is also widely supported and usually easily deployed. https://scotthelme.co.uk/content-security-policy-an-introduction/.
Offenders: https://www.wikidata.org/wiki/Q64
Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)	Set a referrer-policy header to make sure you do not leak user information.	0
Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
Offenders: https://www.wikidata.org/wiki/Q64
Avoid third party cookies that is used to track the user. (thirdPartyCookies)	The page sets 1 third party cookie.	0
Description: Third party cookies are used to track the user. They are automatically blocked in Safari and Firefox.
Offenders: .wikimedia.org NetworkProbeLimit=0.001

Page info

Page info
Title	Berlin - Wikidata
Generator	MediaWiki 1.44.0-wmf.23
Width	1920
Height	95535
DOM elements	31300
Avg DOM depth	21
Max DOM depth	31
Iframes	0
Script tags	4
Local storage	1.6 MB
Session storage	0 b
Network Information API	unknown

Resource Hints
dns-prefetch
https://meta.wikimedia.org/
https://www.wikidata.org/wiki/auth.wikimedia.org
preconnect
https://upload.wikimedia.org/

Technologies used to build the page.

Data collected using Wappalyzer version 6.10.66. With updated code from Webappanalyzer 2024-12-27. Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyzer find more information about technologies used.

Technology	Confidence	Category
MediaWiki	100	Wikis
PHP	100	Programming languages
HSTS	100	Security
HTTP/2	100	Miscellaneous

Visual Metrics

Browser Metrics

Largest Contentful Paint

When in time the page main content is rendered (collected using the Largest Contentful Paint API). Read more about Largest Contentful Paint.

Element type	DIV
Element/tag	<div class="wikibase-entitytermsview-heading-description "></div>
Render time	936 ms
Element render delay	440 ms
TTFB	495 ms
Resource delay	0 ms
Resource load duration	0 ms
Load time	0 ms
Size (width*height)	8344
DOM path
div:eq(1) > div > div:eq(2) > main#content > div#bodyContent > div#mw-content-text > div#wb-item-Q64 > div:eq(0) > div:eq(0) > div:eq(0) > div:eq(0)> div:eq(1) > div > div:eq(2) > main#content > div#bodyContent > div#mw-content-text > div#wb-item-Q64 > div:eq(0) > div:eq(0) > div:eq(0) > div:eq(0)>

The largest contentful paint is highlighted in the image. If no element is highlighted the element was removed before the screenshot or the LCP API couldn't find the element.

Interaction to Next Paint

Interaction to Next Paint (INP) is a metric that try to measure responsiveness. It's useful if you are testing user journeys. Read more about Interaction to Next Paint.

Server timings

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

Visual Elements

PageXray

How the page is built.

Largest assets on the page (by transfer size)

Requests and sizes per content type

Data per domain

Expires and last modified statistics

CPU

Screenshots

afterPageCompleteCheck.jpg

largestContentfulPaint.jpg