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Images reserve their space: how the world's top websites do
Of 448 of the world's most popular websites that we audited, 98 pass this check and 350 fall short.
22%
pass
98 of 448 sites
78%
fall short
350 of 448 sites
2 of 51
by how often it fails
1 is the most-failed check · area: Speed
What this check means
Images with a declared width and height reserve their space, so text does not jump around while the page loads.
Guide: Image SEO: alt text, file size and layout shift
Popular sites that fall short (350)
cloudflare.comamazonaws.commicrosoft.comapple.comlinkedin.comazure.comtriplinkintl.comamazon.commail.ruoffice.comlive.comgithub.comcloud.microsoftfastly.netdzen.ruwhatsapp.netbing.comdoubleclick.netgooglesyndication.comicloud.commyfritz.netzoom.ustiktok.comwhatsapp.comgoogledomains.comspotify.comb-cdn.netroblox.comamazonvideo.comvimeo.comntp.orgworkers.devbaidu.comblogspot.comqq.comnginx.orgf5.comt-online.det.mesentry.iolencr.orgyandex.neteuropa.euyandex.rusamsung.comipify.orggithub.iodropbox.comregistrar-servers.comduckdns.orgapache.orgdiscord.ggvk.runic.rutelekom.netcrashlytics.comnytimes.comvk.comtelegram.orggravatar.commeraki.comshopify.comgoogle-analytics.comcreativecommons.orgflickr.comforter.comdiscord.comw3.orgreg.ruquickconnect.tokaspersky.compki.googbrave.comsoundcloud.comtheguardian.comunity3d.comdoi.orghcaptcha.comafternic.comoracle.combbc.comroku.comwikimedia.orgmts.ruweather.comcriteo.comtwitch.tvnist.govapplovin.comcisco.comsourceforge.netsalesforce.comcpanel.netlinktr.eegoogleblog.comwho.intalidns.comdatadoghq.comslack.comhp.comlaunchdarkly.comtelegram.mebooking.comlaunchpad.netnature.comsteampowered.comtinyurl.comgamepass.comonelink.mealibaba.commiui.comwiley.comcasalemedia.comzendesk.comdebian.orgvungle.comuserapi.comamazon.co.ukharvard.eduphp.netunisys.compaloaltonetworks.comok.runaver.comsmartadserver.comwithgoogle.comea.combilibili.comokta.combranch.ionvidia.comtradingview.comtp-link.comdell.comweebly.comcdc.govdynatrace.comelasticbeanstalk.comun.orgaliyun.comatlassian.netbsky.appgo.comglobo.comgitlab.comwps.comxboxlive.comopendns.comname.comnasa.gov
And 200 more. The full list is in the data file.
Popular sites that pass (98)
wikipedia.orgwindows.netadobe.comwordpress.orggandi.netyahoo.comskype.comopera.commozilla.orgwordpress.comnginx.comui.combit.lyadobe.ioandroid.comwindows.comubuntu.comstripe.comamplitude.commit.edubbc.co.ukhubspot.comcentinel-analytica.comwww.gov.ukip-api.comgrammarly.comspringer.comanthropic.comrubiconproject.comchatgpt.sitegnu.orgcheckpoint.comdotomi.comstanford.eduadobe.netline.meintel.combraze.comwalmart.comwp.comscribd.comteamviewer.comfoxnews.comstatista.comdocker.commozilla.comfirefox.comslideshare.neteset.comthreads.com3lift.comdailymail.comsquarespace.comdreamhost.comvercel.apptimeweb.rusupercell.comjquery.comhotjar.comsagepub.comtechcrunch.comikea.comservice.gov.ukspiegel.decbsnews.comlemonde.frdeepl.comrfc-editor.orgitch.iodailymail.co.ukzoho.comcnet.combild.dehomedepot.comzillow.comnetlify.appwp.pldisneyplus.commixpanel.comchess.comdaum.netpoki.comworldbank.orginstructure.comfwmrm.netfigma.comwyzecam.comlatimes.comtailscale.comno-ip.comnote.comrepubblica.itcpmstar.compbs.orgcorriere.ithuffpost.comdocker.iosynology.com
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/image-size"><img src="https://adnave.com/embed/image-size.svg" alt="Share of the world's top websites that pass the check “Images reserve their space”. 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, “Images reserve their space: how the world's top websites do”, https://adnave.com/research/stats/image-size
Download the data (CSV)