DEV3 Proforma Invoice and Credit Note Generator — Source Code (React + Tailwind)

Source code of the DEV3 Proforma Invoice and Credit Note Generator, one tool for proforma invoices and credit notes with tax, discount, Incoterms and original-invoice reference.

Download: buy a licence and the ZIP is waiting in Account → Downloads. Try it live: https://dev3.tech/tools/proforma-invoice-credit-note-generator 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

• Separate saved drafts per document type
• Credit reason and refund details
• Tax per line or overall, inclusive or exclusive
• Shared PDF look with the invoice maker

Tech stack

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

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.
• Tax rules for credit notes vary by country; Latin text only in the PDF.