Run 3 summary

https://en.wikipedia.org/wiki/Barack_Obama

Tested 2017-11-23 23:44:34 using Chrome 62.0.3202.94 for  3 runs with desktop profile and connectivity native.

All runs: 1 - 2 - 3

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Summary

Summary of some of the most important metrics.

MetricValue
Performance score:74
Total page size:1.4 MB
Requests:97
First Visual Change:733
Speed Index:791
Visual Complete 85%:900
Visual Complete 95%:900
Visual Complete 99%:1967
Last Visual Change:1967
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Waterfall

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on accessibility and best practices.

I am the coach

Coach score

  • Total score 73
  • Performance score 74
  • Accessibility score 50
  • Best practice score 88

Accessibility advice (50)

TitleAdviceScore
Always use an alt attribute on image tags (altImages)The page has 43 images that lack alt attribute(s) and 43 of them are unique.The page has 6 images where the alt text are too long (longer than 125 characters).0
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Structure your content by using landmarks (landmarks)The page doesn't use any landmarks.0
Use headings tags within section tags to better structure your page (sections)The page doesn't use sections. You could use them to get a better structure of your content.0
Use caption and th in tables (table)The page has tables that are missing caption, please use them to give them a proper heading or summary.0
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Performance advice (74)

TitleAdviceScore
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
  • 3.2.1
Avoid extra requests by setting cache headers (cacheHeaders)The page has 81 request(s) that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 831.9 kB the next access.0
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  • https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/22px-Commons-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/30px-Wikinews-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/25px-Wikiquote-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/29px-Wikisource-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/30px-Wikidata-logo.svg.png
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https
  • https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=WAM_2017&banner=WAM_2017&uselang=en&debug=false
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/WAM_2017_Banner.svg/200px-WAM_2017_Banner.svg.png
  • https://upload.wikimedia.org/wikipedia/foundation/2/20/CloseWindow19x19.png
Long cache headers is good (cacheHeadersLong)The page has 6 request(s) that have a shorter cache time than 30 days (but still a cache time).94
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=startup&only=scripts&skin=vector
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=ext.cite.styles%7Cext.tmh.thumbnail.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cmediawiki.legacy.commonPrint%2Cshared%7Cmediawiki.sectionAnchor%7Cmediawiki.skinning.interface%7Cskins.vector.styles%7Cwikibase.client.init&only=styles&skin=vector
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=site.styles&only=styles&skin=vector
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=ext.gadget.charinsert-styles&only=styles&skin=vector
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=Spinner%2Coojs%2Csite%7Cext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CkvStoreMaintenance%2ClegacySupport%2CstartUp%7Cext.centralauth.centralautologin%7Cext.cite.a11y%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.eventLogging.subscriber%7Cext.popups.images%7Cext.uls.common%2Ceventlogger%2Cinit%2Cinterface%2Cpreferences%2Cwebfonts%7Cext.visualEditor.desktopArticleTarget.init%7Cext.visualEditor.supportCheck%2CtargetLoader%2Ctrack%2Cve%7Cjquery.accessKeyLabel%2CbyteLength%2CcheckboxShiftClick%2Cclient%2Ccookie%2CembedPlayer%2CgetAttrs%2Chidpi%2ChighlightText%2CloadingSpinner%2Cmw-jump%2CmwEmbedUtil%2Csuggestions%2CtabIndex%2CtextSelection%2Cthrottle-debounce%2CtriggerQueueCallback%7Cjquery.uls.data%7Cmediawiki.RegExp%2CTitle%2CUri%2Capi%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cnotify%2CsearchSuggest%2Cstorage%2Ctemplate%2Ctoc%2Cuser%2Cutil%7Cmediawiki.api.options%2Cuser%7Cmediawiki.language.data%2Cinit%7Cmediawiki.legacy.wikibits%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%2Cstartup%7Cmediawiki.template.mustache%2Cregexp%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Cmw.EmbedPlayer.loader%7Cmw.MediaWikiPlayer.loader%7Cmw.MwEmbedSupport%2CPopUpMediaTransform%7Cmw.MwEmbedSupport.style%7Cmw.PopUpMediaTransform.styles%7Cmw.TMHGalleryHook.js%7Cmw.TimedText.loader%7Cschema.UniversalLanguageSelector%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=17bb3wl
  • https://en.wikipedia.org/w/load.php?debug=false&lang=en&modules=jquery.ui.core%2Cmouse%2Cslider%2Cwidget%7Cjquery.ui.core.styles&skin=vector&version=0skt22d
Total image size shouldn't be too big (imageSize)The page total image size is 822.2 kB. It's really big. Are the page using the right format for the images? Are they compressed as good as they can? Make them smaller by using ImageOptim.50
Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 294 kB and the uncompressed size is 1.1 MB. This is totally crazy! You need to remove as much as possible.0
Don't use private headers on static content (privateAssets)The page has 2 request(s) 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 is static it should never be private. Make sure that the assets really should be private and only used by one user. Else make it cacheable for everyone.90
  • https://en.wikipedia.org/wiki/Barack_Obama
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https

Best practice advice (88)

TitleAdviceScore
Meta description (metaDescription)The page is missing a meta description.0

Page info

Page info
TitleBarack Obama - Wikipedia
Width1350
Height36368
DOM elements16154
Avg DOM depth13
Max DOM depth26
Iframes0
Script tags6
Local storage784.4 KB
Session storage81 B
HTML vs AMPPlain good HTML page
Resource Hints
dns-prefetch
https://login.wikimedia.org/
https://meta.wikimedia.org/
No URLs for preconnect
No URLs for prefetch
No URLs for prerender
Third party
JQuery3.2.1
Google AnalyticsNo
Google Tag ManagerNo
PiwikNo
BoomerangNo
New RelicNo

Browsertime

Collect timing metrics from your browser using Browsertime.

Video

Visual Metrics

Browser Metrics

Specials and User Timing
first-contentful-paint724
first-paint724
RUM Speed Index770
Fully loaded2031
mwLoadStart706
mwLoadEnd1585

Custom scripts

There are no custom configured scripts.

PageXray

Xrays your page and let you know all about how the page is built.

Summary
HTTP versionHTTP/2.0
Total requests97
Total domains4
Total transfer size1.4 MB
Total content size3.1 MB
Responses missing compression0
Requests per response code
20097

Requests and sizes per content type

Transfer vs content size

Requests

ContentHeader SizeTransfer SizeContent SizeRequests
htmlN/A235.5 KB1.2 MB1
cssN/A19.1 KB70.6 KB3
javascriptN/A287.1 KB1.0 MB8
imageN/A848.2 KB797.7 KB83
svgN/A2.5 KB5.3 KB1
faviconN/A1.6 KB2.7 KB1
TotalN/A1.4 MB3.1 MB97

Size and requests per domain

DomainHeader SizeTransfer SizeContent SizeRequests
en.wikipedia.orgN/A581.6 KB2.4 MB16
upload.wikimedia.orgN/A808.8 KB760.5 KB79
login.wikimedia.orgN/A995 B219 B1
meta.wikimedia.orgN/A2.6 KB6.1 KB1

Expires, last modified and cookies stats

typeminmedianmax
Expires0 seconds0 seconds1 year
Last modified4 hours48 weeks4 years
Cookies004