Canonical Tag Checker
Check whether a page has a canonical tag, what it points to, and whether it's set up correctly — free, instant, no signup required.
Free & unlimited checks. Results are cached for 6 hours per URL to keep things fast.
Why Canonical Tags Matter
The canonical tag tells search engines which version of a page is the "master" copy, preventing duplicate-content confusion.
Avoid Duplicate Content
Many sites accidentally serve the same content on multiple URLs (with/without www, trailing slash, tracking parameters). A correct canonical tag consolidates ranking signals into one URL.
Self-Referencing Canonicals
Best practice is for most pages to canonicalize to themselves, confirming to search engines that this exact URL is the one that should be indexed and ranked.
Common Mistakes
Missing tags, multiple conflicting canonical tags, or a canonical pointing to a broken or unrelated URL can all cause search engines to ignore your preferred page entirely.
Frequently Asked Questions
Is this canonical tag checker really free?
Yes — checking any page's canonical tag with this tool is completely free with no signup or usage limits.
What does "self-referencing" mean?
It means the canonical tag on a page points back to that same page's own URL, which is the recommended setup for most standalone pages.
Is it bad if a page's canonical points elsewhere?
Not necessarily — this is intentional for things like print versions, paginated pages, or near-duplicate filtered pages. It's only a problem if it's unintentional.
What if no canonical tag is found?
Search engines will try to pick a canonical version on their own, which may not be the URL you want indexed — adding an explicit tag removes that guesswork.
Worried About Duplicate Content Issues?
Let our SEO team audit your canonical setup site-wide.
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