Extro
Extro is an opinionated, open-source browser extension starter kit based on learnings from building multiple production extensions, providing a comprehensive foundation with React, WXT framework, Supabase backend, shadcn/ui components, TypeScript, Tailwind CSS, Bun package manager, Vite for frontend tooling, and Biome for linting and formatting.
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About
About Turbostarter Extro
Created by Bartosz Zagrodzki, this starter kit eliminates months of configuration by providing battle-tested patterns for authentication, storage, messaging, and deployment across Chrome and Firefox browsers. The template features full TypeScript type safety across extension pages and backend services, support for all extension page types including popup, options, background workers, content scripts, and side panels, authentication and OAuth integration powered by Supabase, storage and messaging APIs for cross-context communication, hot module replacement for instant feedback during development, pre-configured CI/CD pipelines for automated testing and deployment, internationalization (i18n) support for multi-language extensions, analytics integration for tracking user behavior, and modern development tooling with Biome for fast linting and formatting. Unlike starting from scratch with browser extension APIs, Extro provides proven patterns for handling complex scenarios like cross-origin messaging, persistent storage across extension contexts, authentication flows within extension constraints, and building multiple extension pages that share code efficiently.
This starter is invaluable for developers building productivity extensions who want to focus on features rather than boilerplate, indie developers launching browser extensions as products, teams creating internal tools as browser extensions, developers migrating from Manifest V2 to V3, and anyone frustrated with the complexity of browser extension development. The opinionated stack means less decision fatigue while maintaining the flexibility to customize for specific needs. Extro demonstrates how to architect modern browser extensions with proper separation of concerns, integrate backend services with extension frontends, implement authentication within extension security constraints, and deploy extensions to both Chrome Web Store and Firefox Add-ons.
Get started
Free, open source, and ready to ship.
Clone the repo, install dependencies, and start customising. Turbostarter Extro is free and open source: its license is in the repository.
- Clone the Turbostarter Extro repository from GitHub.
- Run
npm installorpnpm installto install all required packages. - Run
npm run devto start the development server and begin customizing. - Check the repository’s README and license before you ship.
Terminal
$ git clone https://github.com/turbostarter/extro $ cd extro $ npm install $ npm run dev
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FAQ
Frequently asked questions
Everything you need to know before you ship with Turbostarter Extro.
Extro is an opinionated, open-source browser extension starter kit based on learnings from building multiple production extensions, providing a comprehensive foundation with React, WXT framework, Supabase backend, shadcn/ui components, TypeScript, Tailwind CSS, Bun package manager, Vite for frontend tooling, and Biome for linting and formatting. It is an open source template in the shadcn.io collection of 215.
Turbostarter Extro is made by Turbostarter, an independent developer; shadcn.io lists it but did not make it. Turbostarter has 1 template in the collection, and the author's page lists them.
The listing tags Turbostarter Extro with React, Tailwind, Supabase and Full-stack. Those are its categories, not a dependency list: the exact packages and versions are in the repository's package.json.
Yes. The Turbostarter Extro page embeds its live demo from turbostarter.dev, and links to it so you can open the real deployment before you clone.
The Turbostarter Extro listing was last updated on October 8, 2025. That date is the listing's, not the repository's: check the repository's commits for recent activity.
Clone the repository (git clone https://github.com/turbostarter/extro), then follow the README. The Turbostarter Extro page shows the usual steps and a terminal block with the commands to copy.
Install dependencies with npm install or pnpm install, then run npm run dev. The README in the Turbostarter Extro repository says which package manager and environment variables it needs.
No. Turbostarter Extro is cloned from its own GitHub repository, so shadcn.io isn't involved. Browsing the page and its live demo need no account either; Pro adds the premium templates, the blocks and the MCP server.
Follow the deployment notes in the Turbostarter Extro README: the right host depends on its framework and any services it needs. The page's categories show what it is built for.
The Turbostarter Extro listing doesn't record a license. Check the LICENSE file in its repository (https://github.com/turbostarter/extro), and ask the author if there isn't one.
That depends on Turbostarter Extro's license in its repository, which shadcn.io does not set. Read the LICENSE file before you use it in a client or paid project, and ask the author if it is unclear.
Attribution follows Turbostarter Extro's license. Many permissive licenses ask you to keep the copyright notice and license text in your copy; its LICENSE file says exactly what.
No. The Pro license covers shadcn.io's own Pro code, blocks and premium templates. Turbostarter Extro is the author's project, under the terms in its repository.
Turbostarter supports Turbostarter Extro, through its GitHub repository: read the docs, open an issue or look for discussions. shadcn.io does not maintain it.
Yes. Once you clone it, Turbostarter Extro is your own code: change the theme, add pages and connect your backend. It uses shadcn/ui, so you can also add more components the same way.
Yes. Components are free with a free account and the blocks are in Pro; both are copied into your project with the shadcn CLI. Check that Turbostarter Extro uses Tailwind CSS and the shadcn/ui setup (a components.json) before you add them, and pick the base library your project already uses.
Yes, with Pro. The shadcn.io MCP server's search_templates tool finds templates by what they are, and returns each one's repository and live demo, so your editor can set up Turbostarter Extro for you. Your files stay on your machine.
The collection has 11 other open source Supabase templates like Turbostarter Extro, shown at the foot of its page with the ones sharing most categories first. All of them are at /template/category/supabase.
Turbostarter has no other templates in the collection.
Yes. The 14 premium templates (Solaris, Reframe Labs, Spherule and Max and more) are built by shadcn.io and come with every Pro plan, if you want maintained code with a design file.
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