DEV3 Free App Icon Generator — Source Code (React + Tailwind)

Source code of the DEV3 App Icon Generator, turns one image into an iOS AppIcon set with Contents.json, Android mipmaps with adaptive icon XML, and PWA icons with a manifest snippet, zipped in the browser.

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

• Complete iPhone and iPad icon list with flattened opaque PNGs
• Android legacy, round and adaptive foreground layers per density
• Maskable PWA icons and manifest and head snippets
• README and zip structure ready to copy into projects

Tech stack

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