DEV3 Image to PDF and PDF to Image Converter — Source Code (React + Tailwind)

Source code of the DEV3 Image to PDF and PDF to Image Converter, converts images into a PDF with page size, orientation, margin and fit controls, and renders PDF pages to PNG or JPG at a chosen DPI with zip download.

Download: buy a licence and the ZIP is waiting in Account → Downloads. Try it live: https://dev3.tech/tools/image-pdf-converter 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

• A4, Letter, A5, Legal or image-sized pages with contain, cover and stretch fit
• EXIF-aware image loading via createImageBitmap
• PDF to PNG/JPG at 72 to 300 DPI with page selection
• Per-image and zip downloads

Tech stack

React 19, TypeScript, Vite, Tailwind CSS 4, jszip, pdf-lib, pdfjs-dist.

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.
• Very large pages at 300 DPI can exhaust memory on phones.