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Preact
Fast 3kB alternative to React with the same modern API - the king of widgets and embeds
Content updated · 2026-10-13
What is it · 它是什么
What is Preact?
Preact is a "fast 3kB alternative to React with the same modern API": close to the native DOM, tiny and fast, with a preact/compat alias that lets you use libraries from the React ecosystem directly. When embedding interactive widgets in constrained environments (small tools, micro front-ends, byte-conscious scenes), it is the standard answer. v11 shipped in October 2026.
How to use · 怎么用
How to use Preact
- Start new projects on Preact; switch existing React projects via the compat alias.
- Default to it for widgets and embeds where size wins most.
- Add preact/compat before installing React-ecosystem libraries.
Key features · 核心特点
Key features of Preact
- About 3kB with the same modern React API
- preact/compat for the React ecosystem
- Close to the DOM, fast rendering
- New v11 (2026-10), open source and free
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