DEV3 Free UTM and WhatsApp Link Builder — Source Code (React + Tailwind)

Source code of the DEV3 UTM and WhatsApp Link Builder, a UTM campaign URL builder with saved presets and bulk mode, plus a WhatsApp click-to-chat link generator with a QR code.

Free download: sign in to any DEV3 account and click Download ZIP. Try it live: https://dev3.tech/tools/utm-whatsapp-link-builder shows the finished tool running.

What is in the download

• A standalone Vite + React + TypeScript + Tailwind CSS project: src/tool holds the tool, shared pieces sit beside it
• package.json with exact versions plus a lockfile, so npm ci works
• README.md (run, build, embed in Next.js or plain React) and an MIT LICENSE

What the code does

• UTM builder that preserves existing queries and fragments
• Presets saved to localStorage and bulk tagging with CSV export
• wa.me link and HTML button snippet with a pre-filled message
• Downloadable SVG QR code using qrcode-generator

Tech stack

React 19, TypeScript, Vite, Tailwind CSS 4, qrcode-generator.

Install and customise

The How to install and How to use tabs list the steps. In short: unzip, npm ci, npm run dev, then copy the tool folder into your own app if you want to embed it.

Good to know

• A browser-only tool: there is no backend or database in the code.