What are the benefits of Canonical URL Generator?

Instantly generate properly formatted canonical tags by simply entering a URL.. Real-time validation detects common mistakes like fragments and relative URLs.. Runs entirely in the browser, so your URL data never leaves your device..

Is Canonical URL Generator free?

Yes, it is completely free to use, and no registration is required. Tool processing happens entirely in your browser, and your input content and uploaded files are not sent to a server. Our first-party improvement metrics use no cookies, visitor IDs, or session IDs and store only normalized page paths and daily counts for fixed event IDs.

Canonical URL Generator

Enter a URL to generate a canonical tag instantly. Built-in validation helps you avoid common SEO mistakes.

SEO Utility

canonical URL生成

URLを入力するだけでcanonical タグを生成。バリデーション付きで重複コンテンツ対策を支援します。

canonical URL

canonical URLのベストプラクティス

canonical URLは必ず絶対URLで指定してください。
プロトコル（HTTPSを推奨）を統一してください。
トレイリングスラッシュの有無をサイト全体で統一してください。
クエリパラメータ（UTMパラメータなど）は通常除去します。
フラグメント（#）は含めないでください。
URLは小文字に統一することを推奨します。
自己参照 canonical（そのページ自身を指す）を設定することが推奨されます。

すべての処理はブラウザ内で完結します。

About Canonical URL Generator

The Canonical URL Generator is a browser-based tool that automatically creates link rel="canonical" tags for specifying the preferred version of a web page. In search engine optimization (SEO), canonical tags are one of the most critical methods for resolving duplicate content issues. When the same content is accessible via multiple URLs—such as HTTP vs HTTPS, with or without www, or URLs with tracking parameters—a canonical tag tells search engines which URL to treat as authoritative, preventing PageRank dilution. Simply enter your URL to instantly generate a properly formatted canonical tag. Real-time validation automatically detects common SEO mistakes including fragments (#) in URLs, query parameters that should be removed, relative URLs instead of absolute ones, missing protocols, and mixed-case characters. Each issue is displayed with clear explanations. The generated tag can be copied with one click and pasted directly into your HTML head section. All processing happens entirely within the browser, and no URL data is sent to any server.

How to use Canonical URL Generator

Enter the URL you want to set as the canonical URL in the input field.
Review the validation results and fix any errors or warnings.
Copy the generated tag using the copy button and paste it into your HTML head section.