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Preact - Framework
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Preact

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description Preact Overview

Preact is a fast, 3kB alternative to React with the same modern API. It is designed for developers who want the React development experience but need a significantly smaller bundle size and faster performance. Preact is fully compatible with React's ecosystem, allowing you to use most React libraries with minimal configuration. It is an excellent choice for performance-sensitive applications, mobile-first projects, or any scenario where every kilobyte of JavaScript matters.

It provides a high-performance foundation without sacrificing the developer experience.

insights Ranking position

Preact ranks #78 of 219 in the Framework ranking, behind Dropwizard, ahead of Pedestal.

balance Preact Pros & Cons

thumb_up Pros
  • check Extremely small bundle size
  • check React-compatible API
  • check Excellent rendering performance
thumb_down Cons
  • close Smaller ecosystem than React
  • close Lacks some advanced features
  • close Requires complex aliasing

help Preact FAQ

Can an existing React application be switched to Preact?

Many projects can alias React and ReactDOM to `preact/compat`, which implements much of the familiar React API. Compatibility should still be tested because some React-specific libraries rely on internals or edge-case behavior that Preact does not reproduce.

Does Preact support hooks and context?

Yes, Preact supports hooks such as `useState`, `useEffect`, and `useContext`, along with context and modern component patterns. Its compatibility layer also helps React-oriented packages recognize the expected APIs.

Why is Preact commonly described as a 3 kB React alternative?

Its core runtime is roughly 3 kB when minified and compressed, although the exact delivered size depends on the build and imported modules. Adding `preact/compat`, routing, state libraries, and application code increases the final bundle.

Is Preact maintained by Google?

Preact is an independent open-source project created by Jason Miller, who has also worked at Google. It is not simply a lightweight edition of React published by Meta or an official Google framework.

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