Canonical Tag Generator
Generate canonical link tags and HTTP headers to prevent duplicate content.
HTML <head> tag
<link rel="canonical" href="https://www.example.com/blog/my-article" />HTTP Response Header
Link: <https://www.example.com/blog/my-article>; rel="canonical"Normalized Canonical URL
https://www.example.com/blog/my-articleAbout This Tool
A canonical tag (<link rel="canonical">) tells search engines which version of a URL is the "master" copy when duplicate or similar pages exist. This prevents link equity from being split across multiple URLs.
This tool normalizes your URL (lowercases the hostname, removes trailing slashes) and generates both the HTML tag for your <head> section and the equivalent HTTP response header.
How to Use
- Enter your page URL in the input field.
- The tool auto-normalizes the URL (removes trailing slash, lowercases hostname).
- Copy the HTML <head> tag and paste it inside your page's <head> element.
- Alternatively, set the HTTP response header on your server for the same effect.
Use Cases
Use canonical tags to consolidate www vs non-www URLs, HTTP vs HTTPS, filtered or paginated product pages, and syndicated content published on third-party sites.
FAQ
- Should every page have a canonical tag? β Yes. Even if a page has no duplicates, a self-referential canonical is recommended as a best practice for SEO.
- Should I use an absolute or relative URL? β Always use absolute URLs (https://...). Relative paths are technically valid but can cause issues in some crawlers.
- Does the canonical tag guarantee deduplication? β No. It is a hint to search engines, not a directive. Search engines will usually respect it, but may override it if they consider a different URL more authoritative.