Canonical tag checker
Enter a page URL to check its canonical tag.
What this checks
Looks for the canonical link tag and checks whether it is single, absolute and self-referencing.
How to fix common problems
- Add one canonical tag in the head of every page.
- Use the full URL, including https.
- Point to another page only when this page is a true duplicate.
Common questions
What is a canonical tag?
A link tag that tells search engines which URL is the preferred version of a page, which helps with duplicate content.
Should a canonical point to the same page?
Usually yes. A self-referencing canonical is the safe default. Point to another page only for true duplicates.