IconVault logoIconVault
Sign in

Canonical Checker - Free Online SEO Audit Tool | IconVault

Free canonical tag checker: audit a page's canonical, title, meta description and robots tags for SEO issues. 100% in-browser.

All tools

Canonical Checker

Audit canonical, title and meta tags

5 of 5 free uses left

5 of 5 free checks left.

Issues

Paste HTML and run the check to see missing, relative or conflicting canonical tags.

About this tool

IconVault's Canonical Checker audits a page's canonical tag, title tag, meta description and robots directives from pasted HTML and flags real SEO issues: missing canonicals, multiple canonical tags, relative or http:// canonical URLs, long titles and descriptions, and the risky noindex plus canonical combination. Every check comes with an error, warning or pass verdict.

Everything is free and runs fully in your browser: nothing you paste is uploaded, and the analysis is instant. Perfect for a quick pre-publish SEO check or debugging duplicate-content problems.

Frequently asked questions

Popular searches

canonical checkercanonical tag checkercheck canonical tagcanonical url checkerseo canonical checkerrel canonical checkercanonical tag validatorcanonical tag testcanonical link checkerduplicate content checkercanonical tag missingmultiple canonical tagsrelative canonical urlcanonical http vs httpsnoindex canonical conflictseo audit tool freeon page seo checkermeta tags checkertitle tag checkermeta description checkerrobots meta tag checkercheck meta tags onlineseo tag analyzerhtml head checkerview source seo checkcanonical tag best practiceswhat is canonical tagcanonical tag seoself referencing canonicalcanonical tag htmllink rel canonicalcanonical tag wordpresscanonical checker onlinefree canonical checkercanonical url validatorseo canonical tag toolcheck canonical onlinecanonical tag auditwebsite canonical checkpage canonical inspectorcanonical tag examplecanonical tag meaningcanonical url seoduplicate content seo fixcanonicalization checkerurl canonicalization testseo meta tag checkerfree seo audit toolsonpage seo audittechnical seo checkercanonical tag lengthhow to add canonical tagcanonical tag generator alternative

More tools

Meta Tag Generator

SEO meta tags + Open Graph + Twitter cards in one click.

Open Graph Generator

og:title, og:image & friends - social preview tags done right.

Robots.txt Generator

Allow/disallow rules, sitemap & crawl-delay - valid robots.txt instantly.

Sitemap Generator

Build a valid sitemap.xml from your URL list.

Coming soon

CLI

Coming soon

Figma plugin

Coming soon

VS Code extension

Coming soon

Chrome extension

Coming soon

AI icon generator

Coming soon

Team workspaces

Coming soon

View all 10+ tools →