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Verify Canonical Tags Online for Free

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Ubify Intelligence Team

EDITORIAL TEAM

~2 min read
~254 words
VERIFIED MAY 2026

About This Tool

The Canonical Tag Checker inspects your web pages to ensure the rel="canonical" tag is correctly implemented, preventing duplicate content issues that can harm your search engine rankings — a must-have tool for deep technical SEO audits. It verifies that search engines know which version of a page is the authoritative source. This tool is free, private, and executes entirely in your browser.

How to Use

  1. 1

    Paste your page HTML or <head> section into the input.

  2. 2

    The canonical tag value appears instantly if present.

  3. 3

    Verify the URL matches the intended canonical page for that content.

  4. 4

    Enter the URL of the page you want to audit.

  5. 5

    Click the Check Canonical button to scan the page metadata.

  6. 6

    Verify that the canonical URL matches your intended authoritative version.

  7. 7

    What is a canonical tag used for?

  8. 8

    A canonical tag tells search engines which version of a URL is the master version, helping to merge duplicate or similar pages in search results.

Frequently Asked Questions