Canonical Tag Checker
Check pasted HTML for exactly one canonical tag.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Canonical Tag Checker
How to use this tool
- Enter your values in the fields above.
- Press Generate to see the result.
- Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.
Worked example
The sample HTML has 1 canonical tag pointing at example.com/guides/basil, with a note that the address is not absolute.
What this tool does not do / Limits
This checks only the HTML you paste. It does not check a live page, and it cannot confirm the address resolves.
Frequently asked questions
How many canonical tags should a page have?
Exactly one.
Does it check the address loads?
No. It only reads the address from the pasted HTML.
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