Where should I place a canonical tag?

A canonical tag is normally placed inside the head section of an HTML document.

Should canonical URLs be absolute?

Using a complete absolute URL is generally the clearest approach because it explicitly identifies the preferred URL.

Can a page use a self-referencing canonical tag?

Yes. A page can use a canonical tag that points to its own preferred URL.

🔗 Free Technical SEO Tool

Canonical Tag Generator

Generate valid SEO-friendly canonical tags instantly. Enter your preferred page URL, customize normalization options and copy ready-to-use canonical code.

✓ Instant generation ✓ URL validation ✓ HTML output ✓ HTTP Link header

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Generate Canonical Tag

Create ready-to-use canonical URL markup

Preferred Canonical URL

Enter the absolute URL that search engines should treat as the preferred version.

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Examples:

URL Normalization Options

Choose how the canonical URL should be cleaned before generation.

Remove Query Parameters

Remove values such as ?utm_source= or ?page=2.

Remove URL Fragment

Remove hash fragments such as #section or #reviews.

Lowercase Hostname

Convert the domain name to lowercase.

Force HTTPS

Change HTTP URLs to the HTTPS scheme.

Remove WWW

Convert www.example.com to example.com.

Add Trailing Slash

Add a slash to non-file URL paths.

Enter a canonical URL

Add your preferred page URL and click Generate Tag.

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Your canonical tag will appear here

Enter a preferred URL above to generate valid canonical HTML markup and an optional HTTP Link header.

Protocol

—

Hostname

—

URL Length

Final Canonical URL

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Canonical HTML Tag

Add this markup inside the page head section.

HTML

<link rel="canonical" href="">

HTTP Link Header

Alternative canonical declaration for HTTP headers.

Link: <>; rel="canonical"

HTML Head Preview

Example placement of the canonical element.

page-source.html

<head>
    <title>Example Page</title>
    <link rel="canonical" href="">
</head>

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Instant Generation

Create ready-to-use canonical markup in seconds.

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URL Normalization

Remove parameters, fragments and normalize URL structure.

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URL Validation

Check whether the entered canonical URL can be parsed.

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Multiple Outputs

Generate HTML markup and an HTTP Link header.

Simple Process

How to Generate a Canonical Tag

Create canonical markup in three simple steps.

Enter Preferred URL

Paste the URL that should represent the preferred version of the page.

Choose Options

Select normalization options such as HTTPS, query removal or trailing slash.

Copy the Tag

Copy the generated canonical HTML and add it to your page head.

Technical SEO Guide

What Is a Canonical Tag?

A canonical tag is an HTML link element used to identify the preferred URL for a page. It is commonly written with the rel="canonical" relationship and a URL in the href attribute.

Canonicalization is useful when the same or substantially similar content can be reached through multiple URLs. Examples may include tracking parameters, filtered pages, alternate URL structures or multiple versions of a page.

Canonical Tag Example

A typical canonical element looks like this:


                            <link rel="canonical" href="https://www.example.com/preferred-page/">

The href value identifies the preferred page URL. The element is normally included in the HTML head.

Why Are Canonical URLs Important?

Websites often generate multiple URLs that display the same or similar content. This can happen because of campaign parameters, sorting options, filtering systems, session identifiers, print versions or alternate paths.

A canonical declaration helps communicate which URL is intended to be the preferred version. This can make URL management clearer and support a more consistent technical SEO implementation.

Common Duplicate URL Examples

URL Type	Example	Possible Preferred URL
Tracking Parameter	/page/?utm_source=email	/page/
Sorting Parameter	/products/?sort=price	/products/
Fragment	/guide/#chapter-2	/guide/
Alternate Host	www.example.com/page/	example.com/page/

Self-Referencing Canonical Tags

A self-referencing canonical tag points to the preferred URL of the page on which it appears. For example, a page at a clean preferred URL can include a canonical element that references that same URL.

Example


                            <link rel="canonical" href="https://example.com/seo-guide/">

Canonical Tag Best Practices

Use a Clear Preferred URL

Select the URL version you genuinely want treated as the preferred page.

Keep Signals Consistent

Avoid unnecessary contradictions between canonical declarations and URL strategy.

Prefer Complete URLs

A full absolute URL clearly identifies the intended canonical destination.

Review Generated URLs

Confirm that automated normalization matches your website URL policy.

Important: Review Normalization Options

Query parameters, WWW preferences, HTTP versus HTTPS and trailing slash conventions vary between websites. Only enable transformations that match your actual website architecture and preferred URL policy.

Related SEO Tools

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FAQ

Canonical Tag FAQs

What is a canonical tag? +

A canonical tag is an HTML link element that identifies the preferred URL for a page when multiple similar or duplicate URLs may exist.

Where should I place the canonical tag? +

The canonical link element is normally placed inside the head section of the HTML document.

Should a canonical URL include HTTPS? +

The canonical URL should match the actual preferred protocol of your website. If your preferred pages use HTTPS, the canonical URL should normally use HTTPS.

Can a page canonicalize to itself? +

Yes. A self-referencing canonical points to the preferred URL of the same page.

Should I remove query parameters? +

It depends on your website. Tracking parameters may often be excluded from a preferred URL, but some query parameters can represent genuinely different content. Review your URL structure first.

Is this Canonical Tag Generator free? +

Yes. The Canonical Tag Generator is free to use online.

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Create clean canonical markup for your preferred page URL in seconds.

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