Canonical Issues Leaderboard

This leaderboard ranks audited websites by the number of pages with canonical tag problems — including missing canonicals, self-contradictory declarations, and canonicals pointing to incorrect URLs. Sites at the top have the most canonical issues detected.

Canonical issues occur when pages are missing, conflicting, or misdirecting the canonical tag used to declare the authoritative URL.

This leaderboard ranks audited sites by the number of canonical issues pages found in their latest public audit. Based on 1762 audited sites with canonical issues detected.

How to fix Canonical Issues →View affected pages Browse all issue leaderboards

Thin Content Duplicate Titles Canonical Issues Missing Meta Redirect Chains Broken Links HTTP Status Errors

What is Canonical Issues?

Canonical tags declare which URL is the authoritative version of a page when duplicates or near-duplicates exist. Missing, self-contradictory, or misdirected canonical tags cause search engines to index the wrong URL, split link equity across duplicate versions, or trigger unexpected deindexation during algorithm updates. This is one of the most common causes of ranking loss after site migrations.

Why it matters

Canonical misconfiguration is one of the leading causes of ranking fluctuations after site migrations and one of the hardest issues to diagnose post-hoc. When Google canonicalizes to a different URL than intended, link equity and crawl attention are redirected away from the correct page — a loss that can persist for weeks after the fix is deployed.

How to fix

1.Ensure every published page has a self-referencing canonical tag pointing to its single preferred URL.
2.Audit all canonical tags pointing to external domains or unexpected paths — these are rarely intentional and are often introduced by CDNs or CMS plugins.
3.For duplicate products accessible via multiple URL paths, canonicalize to the version with the highest inbound link count.
4.Verify your XML sitemap only includes canonical URLs, not their parameter or pagination variants.

Read the canonical issues SEO guide →

Want to fix Canonical Issues on your own site?

Canonical Issues SEO guide →

Common Questions

What happens if a page has no canonical tag?

Without a canonical, search engines choose which URL to index on their own — often picking a parameter variant or an HTTP version instead of your preferred URL. This splits link equity across duplicates.

Can a wrong canonical cause a page to disappear from search?

Yes. A canonical pointing to a different URL tells Google to index that URL instead. If the destination is a redirect or a noindex page, the original URL can be deindexed entirely.

Should every page have a self-referencing canonical?

Yes. Every published page should include a canonical pointing to its own preferred URL, even if no duplicate exists. This prevents crawlers from creating accidental duplicates via URL parameters.

Highest Impact Lowest Score

#	Domain	Category	Canonical Issues	SEO Score
1151	localsites.pro	Artificial Intelligence	11%2 pages	45
1152	mooh.app	Games	100%2 pages	80
1153	appthetics.com	Artificial Intelligence	33%2 pages	65
1154	indiedevs.me	Developer Tools	8%2 pages	50
1155	the-shell.com	Security	10%2 pages	80
1156	chamsdel.online	Artificial Intelligence	40%2 pages	85
1157	puppy-ai.com	Artificial Intelligence	100%2 pages	80
1158	yourfirstusers.com	Marketplace	100%2 pages	80
1159	blendstudio.ai	Artificial Intelligence	100%2 pages	60
1160	lovelock.love	Entertainment	20%2 pages	80
1161	voidprompt.com	Artificial Intelligence	67%2 pages	80
1162	coincat.tax	Crypto & Web3	14%2 pages	80
1163	moltnow.app	Artificial Intelligence	100%2 pages	80
1164	sitemaptollms.com	Marketing	14%2 pages	70
1165	v0-indexwizard.vercel.app	Fintech	100%2 pages	80
1166	wealth.codiest.co	Fintech	100%2 pages	45
1167	coachdelphi.com	Content Creation	13%2 pages	60
1168	chatanalyzer.app	Artificial Intelligence	100%2 pages	80
1169	tokscript.com	Content Creation	18%2 pages	80
1170	replygain.com	Artificial Intelligence	67%2 pages	90
1171	oizzy.co	No-Code	100%2 pages	45
1172	vibedesign.site	Design Tools	100%2 pages	80
1173	artifactui.lemonsqueezy.com	Design Tools	100%2 pages	80
1174	oratoai.com	Artificial Intelligence	100%2 pages	85
1175	getinksure.com	Design Tools	100%2 pages	80
1176	dayflix.in	Artificial Intelligence	100%2 pages	80
1177	valinai.com	Artificial Intelligence	100%2 pages	80
1178	icoon.lemonsqueezy.com	Design Tools	100%2 pages	80
1179	mvpstack.io	Design Tools	100%2 pages	45
1180	quick-claw-frontend.vercel.app	Artificial Intelligence	100%2 pages	80
1181	feedbackito.com	Artificial Intelligence	29%2 pages	80
1182	alified.com	Artificial Intelligence	100%2 pages	80
1183	recoverr-waitlist.vercel.app	Sales	100%2 pages	80
1184	askmrbond.com	Productivity	100%2 pages	85
1185	x102.tech	Artificial Intelligence	100%2 pages	80
1186	timecodeagent.app	Productivity	22%2 pages	80
1187	bookmore.neorun.in	Artificial Intelligence	100%2 pages	80
1188	tellia.lemonsqueezy.com	Artificial Intelligence	100%2 pages	80
1189	tryscout.dev	Artificial Intelligence	100%2 pages	80
1190	writegeo.com	Artificial Intelligence	100%2 pages	80
1191	easyclawsetup.com	Artificial Intelligence	100%2 pages	85
1192	vidwise.io	Content Creation	50%2 pages	60
1193	famegrid.com	Social Media	100%2 pages	80
1194	marintelligence.ai	Artificial Intelligence	67%2 pages	95
1195	formzet.com	Artificial Intelligence	67%2 pages	55
1196	postfast.it	Social Media	33%2 pages	35
1197	clawhost.com	Artificial Intelligence	67%2 pages	50
1198	superchargeallai.com	Productivity	100%2 pages	85
1199	peachcalendar.app	Productivity	40%2 pages	45
1200	cascadeai.dev	Developer Tools	100%2 pages	85