extn

What it does

A modern TypeScript framework for building Chrome Manifest V3 extensions with hot reload, live preview, and Vite-powered development. Create production-ready extensions in seconds.

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  ExtroJul 2026 · extrojs.vercel.app · ▲12

  Next.js for Chrome extensions

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  Extension Boilerplate2017 · ▲327

  Build cross browser extensions for Chrome, Firefox & Opera

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  ExtensionKit 2.02023 · ▲118

  Build your next Chrome Extension project faster than ever

• IM
  I made a CLI tool to create web extensions with no build configuration2024 · github.com · ▲381

  Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…

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  AI Chrome Extension BuilderJan 2026 · app.shipper.now · ▲239

  Build Chrome Extensions by Talking to AI

• PA
  Plasmo – a framework for building modern Chrome extensions2022 · github.com · ▲132

  Hey HN, we're excited to have people try out our framework! When we built out a Chrome extension earlier this year, we noticed that the config was too imperative. You had to constantly tell Chrome via the manifest.json file where your files were, what your permissions should be, etc. So we thought it might be interesting to build a more declarative framework. When we built a proof of concept, we enjoyed working with it and decided to invest more time into making it usable and adding more features. We're still pretty early in building it out, and there's a bunch more we want to add, but this…

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