Developer Tools

Canonical Tag Checker

Check the canonical tag on a page and compare it with the input URL.

Tool

Use this Canonical Tag Checker to fetch a page and inspect its rel=canonical tag. It helps confirm whether a page points to itself, another preferred URL, or has no canonical tag at all during technical SEO reviews.

Input

Output

About this tool

Use this Canonical Tag Checker to fetch a page and inspect its rel=canonical tag. It helps confirm whether a page points to itself, another preferred URL, or has no canonical tag at all during technical SEO reviews.

Use canonical tag checker when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.

Why use this tool

Quickly verify whether a page has a canonical tag.
Useful for SEO audits and duplicate-content checks.
Helps compare input URL with canonical destination.
Good for migration and redirect validation.
Shows when a canonical tag is missing.

How to use

Paste a full page URL into the input box.
Run the tool to fetch the page HTML.
Review the canonical URL found in the head section.
Compare the canonical value with the input URL.

Examples

Example

Input

https://example.com/page

Output

Input URL: https://example.com/page
Canonical Found: Yes
Canonical URL: https://example.com/page
Self Canonical: Yes

Shows a page using a self-referencing canonical tag.

Example

Input

https://example.com/page?utm_source=test

Output

Input URL: https://example.com/page?utm_source=test
Canonical Found: Yes
Canonical URL: https://example.com/page
Self Canonical: No

Useful when checking canonical cleanup for parameterized URLs.

Common errors

A domain is entered instead of a full page URL.

Fix: Use the exact page URL you want to inspect, not just the homepage.

Users expect redirects and canonicals to be the same thing.

Fix: A canonical tag is only a page hint, while a redirect changes the destination URL.

The page head cannot be fetched remotely.

Fix: Retry with the full URL and verify manually in source code if needed.

FAQ

What does a canonical tag do?

It tells search engines which URL is the preferred version of a page.

Can a page have no canonical tag?

Yes. The tool will show when no rel=canonical tag is found.

Is a canonical tag the same as a redirect?

No. A canonical is a page signal, while a redirect sends users and bots to a different URL.

Should the canonical always match the input URL?

Not always. Parameter pages or duplicates often point to a cleaner preferred version.

Why is this useful for SEO?

It helps reduce duplicate-content confusion and supports clearer indexing signals.

Use cases

Checking self-canonical setup on landing pages.
Reviewing parameterized URLs during SEO audits.
Spot-checking canonical tags after migrations.
Comparing duplicate pages and preferred URLs.

Canonical Tag Checker

Tool

About this tool

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