Canonical Tag Generator — Bulk rel=canonical, Link headers & hreflang

1) Paste mappings (one per line)

Accepts: page_url , canonical_url OR page_url -> canonical_url OR just list pages (choose auto-canonical). You can also upload CSV files with two columns (page,canonical).

Mappings

Tip: Use exact absolute URLs including protocol (https://). If you paste relative URLs they will be treated as-is.

Options

Default canonical behavior Output type Hreflang map

Entries

Invalid

Unique canon

About This Canonical Tag Generator

This free tool helps SEO professionals, developers, and webmasters generate canonical tags in bulk. Canonical tags are essential for preventing duplicate content issues and consolidating ranking signals. Our tool supports:

Bulk rel=canonical tag generation

HTTP Link header output for server configurations

CSV import & export for large websites

Optional hreflang mapping for multilingual SEO

Unlike other tools, this generator runs entirely in your browser — no data leaves your computer, ensuring privacy and speed.

Frequently Asked Questions

What is a canonical tag?

A canonical tag tells search engines which version of a page to index when duplicate or similar URLs exist.

Why should I use this tool?

It saves time by generating canonical and hreflang tags in bulk, preventing SEO issues caused by duplicate content.

Is my data secure?

Yes. The tool is 100% client-side — no data is sent to a server.

Can I generate hreflang tags?

Yes. You can add simple language codes or import CSV pairs for multilingual SEO.