Canonical tag checker
Find the canonical URL a page declares and check whether it points to the page itself, to another URL on the site or to a different host.
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- {{ plan.maxTaskCount == null ? 'Unlimited' : plan.maxTaskCount }} monitored sites
- All check locations in the report
- TLS, headers & timing details
- Scheduled reports
- REST API access
What the canonical checker reads
The rel=canonical link in the page head, resolved to a full URL and compared with the page it was found on, after redirects.
Find out moreCanonical mistakes that cost rankings
A canonical that points to a staging host, to the http:// version, or to the home page from every URL tells search engines to index a page you did not mean.
Find out moreA check tells you today. Monitoring tells you the day it changes
This is a one-time result. The Indexability option on a website monitor reads the canonical tag on every check and sends a notice when it starts pointing somewhere else.
Find out moreRelated checkers
Know when a canonical starts pointing somewhere else See SEO monitoring
Key takeaways
- This tool loads the page you enter once, follows redirects and reads the rel=canonical link in the HTML as served.
- It resolves the canonical to a full URL and reports whether it points to the page itself, to another URL on the same host, to the http:// version or to a different host.
- The same result shows the page's noindex directives and whether robots.txt allows the URL for all crawlers.
- It is free, needs no login and no credit card.
- For continuous checks, the Indexability option on a website monitor reads the canonical tag on every check and sends a notice when it changes.
Part of HostTracker's website monitoring software.