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This tool is free to use
If it saved you some time, consider buying me a coffee to support future updates.
Buy me a coffeeDefine your master URL to consolidate ranking power and eliminate duplicate content.
This tool is free to use
If it saved you some time, consider buying me a coffee to support future updates.
Buy me a coffeeCanonical Pro generates a correctly formatted rel="canonical" tag from any URL you enter — both the standard HTML version for your page's <head>, and the HTTP header version needed for non-HTML resources like PDFs and images, which can't carry an HTML <link> tag.
Canonical tags tell search engines which version of a page is the "master" copy when duplicate or near-duplicate content exists at multiple URLs — from tracking parameters, HTTP vs HTTPS, www vs non-www, or genuinely duplicated content across pages. Getting this right consolidates ranking signals onto a single URL instead of splitting them across near-identical pages.
Yes, completely free with no account or usage limit.
The HTML tag goes inside the <head> of an HTML page. The HTTP header version does the same job for files that have no HTML head to place a tag in — PDFs, images, and other non-HTML resources — by declaring the canonical relationship in the server's response headers instead.
It's common and generally recommended practice — a page pointing its canonical tag at its own URL removes ambiguity, particularly for pages accessible via multiple URL variants (parameters, trailing slashes, etc).
No. The tag is generated entirely in your browser with plain JavaScript — nothing is sent to a server.
No — Google treats canonical tags as a strong signal, not a directive, and can choose a different canonical URL if other signals (like internal linking or backlinks) point elsewhere. Correctly and consistently implemented canonicals make it far more likely Google follows your preference, but it isn't an absolute guarantee.