Issue Leaderboard

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.

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. 1.Ensure every published page has a self-referencing canonical tag pointing to its single preferred URL.
  2. 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. 3.For duplicate products accessible via multiple URL paths, canonicalize to the version with the highest inbound link count.
  4. 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.

#DomainCategoryCanonical IssuesSEO Score
1101

arcitext.com

Content Creation
23%3 pages
80
1102

lovi.sh

Developer Tools
100%3 pages
85
1103

espritads.site

Marketing
100%3 pages
80
1104

qreonix.com

Marketing
100%3 pages
75
1105

reelestate-ai.com

Social Media
100%3 pages
45
1106

xclipper.com

Content Creation
100%3 pages
75
1107

trainquille.fr

Travel
75%3 pages
75
1108

placely.live

Travel
100%3 pages
85
1109

lopaka.app

SaaS
100%3 pages
80
1110

blackcubesolutions.com

Developer Tools
100%3 pages
85
1111

goalsnap.me

Content Creation
100%3 pages
80
1112

appissuemap.com

Marketing
100%3 pages
80
1113

turboclaw.io

SaaS
100%3 pages
55
1114

ads-pulse.com

Marketing
38%3 pages
80
1115

quickdataconverter.com

Utilities
100%3 pages
85
1116

imageroute.com

SaaS
100%3 pages
80
1117

trustai.center

Developer Tools
100%3 pages
60
1118

sorah.art

SaaS
100%3 pages
80
1119

paralleldrive.com

Artificial Intelligence
100%2 pages
85
1120

loomacv.com

SaaS
100%2 pages
85
1121

chalkframe.com

Artificial Intelligence
18%2 pages
85
1122

prepare.fyi

Artificial Intelligence
17%2 pages
85
1123

llmsignal.app

Artificial Intelligence
18%2 pages
80
1124

brevilabs.com

Artificial Intelligence
100%2 pages
80
1125

clawpilot.app

Artificial Intelligence
13%2 pages
85
1126

bawarchie.com

SaaS
100%2 pages
85
1127

hotelmotel.com

SaaS
100%2 pages
85
1128

clipgenx.pro

SaaS
100%2 pages
80
1129

splitly-wine.vercel.app

SaaS
100%2 pages
85
1130

leadx.com

Artificial Intelligence
100%2 pages
75
1131

felixcraft.ai

Artificial Intelligence
100%2 pages
85
1132

taillens.io

Developer Tools
100%2 pages
85
1133

typepulse.ai

Artificial Intelligence
11%2 pages
85
1134

safeclaw.dev

Artificial Intelligence
18%2 pages
90
1135

writehybrid.com

Artificial Intelligence
6%2 pages
70
1136

localsites.pro

Artificial Intelligence
11%2 pages
45
1137

indiedevs.me

Developer Tools
8%2 pages
50
1138

the-shell.com

Security
10%2 pages
80
1139

uithub.com

Artificial Intelligence
22%2 pages
70
1140

levreview.com

Customer Support
50%2 pages
60
1141

dentai.ai

Artificial Intelligence
100%2 pages
80
1142

mixedbystan.com

Entertainment
100%2 pages
80
1143

v0-indexwizard.vercel.app

Fintech
100%2 pages
80
1144

benithemaker.lemonsqueezy.com

Games
100%2 pages
80
1145

coincat.tax

Crypto & Web3
14%2 pages
80
1146

coachdelphi.com

Content Creation
13%2 pages
60
1147

mooh.app

Games
100%2 pages
80
1148

tokscript.com

Content Creation
18%2 pages
80
1149

wealth.codiest.co

Fintech
100%2 pages
45
1150

appthetics.com

Artificial Intelligence
33%2 pages
65

Showing 11011150 of 1762 sites

Browse Categories

SEO rankings by industry vertical.

View categories →

SEO Issues Library

In-depth guides for every detected issue type.

Browse guides →

Check your own SEO score

Run a full SEO audit in seconds and discover technical issues affecting your search visibility.