UTM Parameter Builder

Enter your destination URL, campaign source, medium and name and get a correctly formatted UTM URL. Validates parameters and URL-encodes special characters. No data sent anywhere.

100% freeNo sign-upRuns in your browserNo upload · data stays private

📖 Read the full UTM Parameter Builder guide — how it works, examples & FAQ →

How to use this tool

  1. Enter your destination URL.
  2. Fill in source, medium and campaign name.
  3. Copy the tagged URL.

Example

calabilabs.com + source=reddit + medium=social → full UTM URL

Why it's private

This tool runs entirely in your browser using JavaScript. Whatever you paste is processed on your own device — it is never uploaded to a server, logged, or stored. Built by Calabi, which also strips AI metadata and C2PA signals from images and video.

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