Canonical URL Checker – Check Canonical Tags & Detect Duplicate Content Online
The Canonical URL Checker is a free online SEO tool that helps you analyze canonical tags on any webpage to identify duplicate content issues and ensure your site is properly optimized for search engines. Simply enter a URL, and this tool will instantly check whether the page has a canonical link tag, show its declared canonical URL, and highlight potential SEO conflicts such as missing, mismatched, or incorrect canonical settings. Perfect for SEO professionals, web developers, and digital marketers, this tool ensures that your pages point search engines to the correct version of your content — preventing duplicate indexing and improving overall SEO performance.
Canonical URL Check
Canonical URL Checker FAQs
Common questions about checking and fixing canonical tag issues for better SEO.
A Canonical URL Checker analyzes a webpage’s canonical tag to determine which version of the URL search engines should index.
Canonical tags prevent duplicate content issues by telling search engines which version of a page is the preferred one for indexing.
Simply enter the page URL and click “Check Canonical URL” to instantly view the canonical tag and target link.
If a page lacks a canonical tag, search engines may choose a preferred version on their own, which can affect SEO consistency.
You can check one URL at a time for precise results. For bulk analysis, use the tool multiple times.
Yes! It detects self-referencing, cross-domain, or non-matching canonical URLs, helping you fix potential SEO issues.
Yes, it’s completely free to use — no login, no software installation required.