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firefox webassembly gpu-acceleration jit wisp-server browser experimental

Summary

Firefox is compiled to run in WebAssembly, using WebGL-based rendering and an experimental JS-to-WASM JIT, with web content proxied through a Puter-hosted Wisp server.

This is the entire Firefox browser rendering to a &lt;canvas&gt; element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly.<p>Here are a few things you might find interesting:<p>- This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets.<p>- There is a novel WASM-&gt;JS JIT for experimental site speedup<p>- This port cost over 25k in opus&#x2F;fable tokens for debugging and JIT research<p>This was just a fun experiment to push the boundaries of WebAssembly. For a more usable &quot;browser in browser&quot; experience, we also built <a href="https:&#x2F;&#x2F;github.com&#x2F;HeyPuter&#x2F;browser.js" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;HeyPuter&#x2F;browser.js</a> that eats a bit less RAM.
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Cached at: 07/15/26, 10:45 PM

# Firefox in WebAssembly Source: [https://developer.puter.com/labs/firefox-wasm/](https://developer.puter.com/labs/firefox-wasm/) **GPU acceleration**WebGL\-based rendering for web content\.**Enable JIT**Experimental JS → WASM JIT\. Expect bugs\.Wisp serverWebSocket proxy that tabs load web content through\. Web content is proxied through a Puter\-hosted Wisp server\.

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