Canonical tool.

Use the canonical tool to check if a page has a canonical tag and to find out which page should be index by search engines based on the canonical location.

The syntax used for a canonical tag:

  • HTML Mark-up = <link rel=”canonical” href=””/>
  • HTTP header = Link: <>; rel=”canonical”

The canonical tag is supported by:Google, Yahoo, and Bing.

UPDATE: This tool now also supports / checks the HTTP Canonical headers

Extra resources

Read the official blogpost by Google on Google Webmaster Central: or watch the video explanation from Matt Cutts:


Tool limitations

  • This tool is unable to execute JavaScript and therefore unable to check JavaScript inserted  tags.
VN:F [1.9.22_1171]
Rating: 9.4/10 (59 votes cast)
Canonical URL / Location Checker, 9.4 out of 10 based on 59 ratings

8 Responses to “Canonical URL / Location Checker”

    • Admin


      • Changed HTML encoded canonical HTTP header on the test page to none-HMTL encoded characters (as it should be).
      • Updated corresponding detection parameters for canonical checker.

      Special thanks to Klaus S. Madsen for pointing out these issues.


Leave a Reply

  • (will not be published)