Canonical Tag Checker

Check canonical tags from pasted HTML, uploaded source files, or fetched pages and review duplicate, missing, relative, and mismatched canonicals.

Page URL

Primary option

Priority

Last modified date

Include lastmod / strict checks Include priority / issue notes Sort output

Input

Upload a local text, HTML, XML, CSV, or log file, or paste manually below. Files are processed in your browser.

Output

Free Online Canonical Tag Checker

Check canonical tags from pasted HTML, uploaded source files, or fetched pages and review duplicate, missing, relative, and mismatched canonicals. This tool runs in your browser so pasted URLs, page source, and keyword lists stay on your device.

Canonical Tag Checker

Free Online Canonical Tag Checker

Related Tools