Firefox in a Tab: 233MB Gecko.wasm, One Browserception
Puter compiled the Firefox browser engine to WebAssembly so the full Gecko rendering engine can run inside another browser tab.
What it is
A build of Firefox's Gecko engine compiled to WebAssembly by Puter, loaded as a 233MB gecko.wasm plus an 18MB chrome-assets.tar.zst bundle.
What it does
Renders a functioning Firefox UI and page-loading pipeline entirely client-side inside a host browser like Chrome, with no server-side emulation involved.
Why it matters
It's a proof point for how far WebAssembly compilation has come, useful for anyone weighing wasm as a sandboxing or portability layer instead of containers or VMs for running legacy or foreign-engine code in the browser.
How to use it
Load the demo page and watch network requests pull the wasm and asset bundles; treat it as a reference for wasm-compiling large native codebases rather than a production tool.
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