UTM Randomizer

A Chrome extension that automatically replaces tracking parameters (UTM, fbclid, gclid, etc.) with random values when you copy links, disrupting analytics attribution while keeping links functional.

Features

• Detects UTM parameters and analytics IDs (fbclid, gclid, msclkid, mkt_tok, HubSpot, Marketo, Mailchimp, Adobe, Omeda, and more)
• Replaces tracking values with humorous nonsense (IDs become word salad, sources become jokes)
• Works with both Ctrl+C copy events and "Copy Link" buttons
• Popup UI with enable/disable toggle and randomization stats
• Shows brief notification when parameters are randomized
• Privacy-focused: no data collection, all processing is local

Installation

From Source

1. Clone this repository
2. Run npm install to install dependencies
3. Run npm run build to build the extension
4. Open Chrome and navigate to chrome://extensions/
5. Enable "Developer mode" (toggle in top right)
6. Click "Load unpacked" and select this directory
7. The extension icon will appear in your toolbar

Usage

Once installed, the extension runs automatically. Copy any URL containing tracking parameters and they will be replaced with random values.

Before:

https://example.com/page?utm_source=facebook&utm_medium=cpc&fbclid=IwAR3xyz123

After:

https://example.com/page?utm_source=carrier-pigeon&utm_medium=smoke-signals&fbclid=cookie-crumbler-mystery-tour-abc123

Click the extension icon to:

• Toggle the extension on/off
• View randomization statistics

Supported Parameters

Category	Examples
UTM	utm_source, utm_medium, utm_campaign, utm_term, utm_content
Click IDs	fbclid, gclid, gbraid, wbraid, msclkid, yclid, ttclid, twclid
Marketing Platforms	mkt_tok, _hsenc, _hsmi, mc_eid, mc_cid, oly_anon_id
Generic	campaign, source, adgroup, creative, placement, ref

Development

npm run dev          # Development build with watch mode
npm run build        # Production build
npm run lint         # Run ESLint
npm run type-check   # TypeScript type checking
npm run test         # Run unit tests

Permissions

Permission	Purpose
clipboardRead	Read copied URLs to detect tracking parameters
clipboardWrite	Write randomized URLs back to clipboard
storage	Persist enable/disable state and statistics

License

MIT