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HTML5 doctype declared: how the world's top websites do
Of 304 of the world's most popular websites that we audited, 294 pass this check and 10 fall short.
97%
pass
294 of 304 sites
3%
fall short
10 of 304 sites
45 of 51
by how often it fails
1 is the most-failed check · area: Technical health
What this check means
The doctype line tells browsers to use modern rendering. Without it, layouts can break in ways that are hard to trace.
Popular sites that fall short (10)
3lift.comatlassian.comcertcenter.comalipaydns.comstatuspage.ioa-mo.netahacdn.meimgsmail.ruunrulymedia.comlowes.com
Popular sites that pass (294)
dyndns.orgg.pageyahoo.co.jplijit.comduolingo.comappsflyer.comtrendmicro.comdropcatch.comspeedtest.netdrom.rubraze.comshein.comwalmart.comhuawei.comgoodreads.comcnbc.comddnss.deietf.orgnetangels.ruwp.compushy.iobusinessinsider.comscribd.comamazon.co.jpsina.com.cneventbrite.comteamviewer.comopenstreetmap.orgfoxnews.comstatista.comtplinkcloud.comoraclecloud.comaddtoany.complaystation.comindiatimes.comshare.googleblogger.comgoogle.deamzn.toklaviyo.comshop.appdocker.cominmobi.comtaboola.commega.co.nzcapcut.commysql.comamagi.tvselectel.rumozilla.comfirefox.comoup.comgoogle.com.hkfast.comnease.neticloud-content.comslideshare.netcornell.edueset.comwired.comthreads.comsohu.commedia.netca.govtime.comsophos.comdailymail.com360yield.comuol.com.brrakuten.co.jpadsrvr.orgsquarespace.comwix.commediatek.comdreamhost.comieee.orgconviva.comvercel.appadriver.rutimeweb.rutarget.comsupercell.commaricopa.govcloudns.netdigitalocean.comjquery.comcrpt.ruflurry.comunesco.orghotjar.comsagepub.comtechcrunch.comintercom.ioezvizlife.comnintendo.comtrueconf.netoptimizely.comonetrust.comikea.comamazon.frfree.frberkeley.edustackadapt.comtelefonica.debox.comamazon.cadoubleverify.comampproject.orgjotform.comnewrelic.comverisign.comring.comservice.gov.ukivi.rumeta.comloc.govtencent.comhstgr.netnike.comamazon.insknt.ruredhat.comprimevideo.comsurveymonkey.comuber.comspiegel.desupabase.cokick.comcbsnews.comgosuslugi.rulemonde.frbandcamp.comdeepl.comfb.comrfc-editor.orgnetflix.netbeget.rufontawesome.combugsnag.comreverse.itglobalsign.comitch.ioamazon.esoutbrain.comgumgum.combinance.comya.rucookielaw.orgpinimg.comasus.com
And 144 more. The full list is in the data file.
How this was measured
The figure comes from Adnave's own audits of 551 popular websites, each read as a search engine first receives it and re-checked about once a month. A site “falls short” when the result is anything other than a pass. That is not always a mistake: a very large site may skip something on purpose. Sites that refuse automated visits are not in the sample, so the figure describes the popular sites that could be read, not the whole web. Full method and limits
Put this figure on your own page
The picture is drawn fresh from our data, so it stays up to date wherever you place it. Free to use; the code links back to this page as the source.
<a href="https://adnave.com/research/stats/doctype"><img src="https://adnave.com/embed/doctype.svg" alt="Share of the world's top websites that pass the check “HTML5 doctype declared”. Live figure by Adnave." width="480" height="200" loading="lazy"></a>
Use this figure
Free to quote, chart and republish with a link to this page. Check the page before quoting: the figure moves as sites are re-audited.
Suggested citation: Adnave, “HTML5 doctype declared: how the world's top websites do”, https://adnave.com/research/stats/doctype
Download the data (CSV)