DEV3 Free Certificate Maker — Source Code (React + Tailwind)

Source code of the DEV3 Certificate Maker, a landscape certificate generator with three templates and bulk creation from CSV, as one multi-page PDF or a zip of per-person PDFs.

Free download: sign in to any DEV3 account and click Download ZIP. Try it live: https://dev3.tech/tools/certificate-maker 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

• RFC 4180 CSV parser with header detection
• {{column}} placeholders in the wording
• Auto-shrinking recipient name, running certificate IDs
• One PDF or a JSZip archive

Tech stack

React 19, TypeScript, Vite, Tailwind CSS 4, jspdf, jszip.

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.
• Latin text only in the PDF; batches are limited by browser memory.