Firefox 被编译为 WebAssembly，可在浏览器中运行完整浏览器

Firefox 在 WebAssembly 中：https://developer.puter.com/labs/firefox-wasm/ （来源：https://news.ycombinator.com/item?id=48926939） 这真是太酷了：Puter 将 Firefox 编译到 WebAssembly 中，使整个浏览器可以在另一个浏览器中运行。

这是我的博客，在 Firefox 中运行，在 WebAssembly 中运行，在 Chrome 中运行：

他们选择 Firefox/Gecko 是因为它对单进程支持很强。该项目估计花费了价值 25,000 美元的 Claude Opus 和 Fable 代币，但利用了 Claude Max 订阅计划，因此实际花费的美元更少。

演示通过 Puter 的服务器将所有流量引导到 WebSocket 协议（使用 Wisp 协议：https://github.com/MercuryWorkshop/wisp-protocol）——这是让此类项目工作的必要条件，因为浏览器中运行的代码无法打开任意网络连接。

（这种代理听起来很昂贵！团队不得不升级服务器：https://news.ycombinator.com/item?id=48926939#48936563 以处理关于该项目的 Hacker News 讨论期间的流量。）

Puter 声称这支持端到端加密，看起来确实如此——我检查了 WebSocket 消息，访问我自己的 HTTPS 网站的流量是加密的，而访问 http://www.example.com/ 的请求和响应是明文的。

这是仓库：https://github.com/HeyPuter/firefox-wasm 用于 firefox-wasm。theogbob/WebkitWasm：https://github.com/theogbob/WebkitWasm 是一个类似项目，将 WebKit 编译到 WASM，但该项目目前没有可访问的在线演示。

这是 Simon Willison 发布的链接帖子，发布于 2026 年 7 月 16 日：/2026/Jul/16/。

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Firefox in WebAssembly：https://developer.puter.com/labs/firefox-wasm/ (via：https://news.ycombinator.com/item?id=48926939) This is absurdly cool: Puter compiled Firefox to WebAssembly such that the whole browser runs in another browser.

Here's my blog, running in Firefox, running in WebAssembly, running in Chrome:

They chose Firefox/Gecko because it has strong single-process support. The project took an estimated $25,000 worth of Claude Opus and Fable tokens, but took advantage of a Claude Max subscription plan so cost much less in actual dollars.

The demo funnels all traffic over a WebSocket protocol (using the Wisp protocol：https://github.com/MercuryWorkshop/wisp-protocol) through Puter's server - a requirement to get this kind of thing to work because code running in browsers can't open arbitrary network connections.

(That proxying sounds expensive! The team had to scale the servers up：https://news.ycombinator.com/item?id=48926939#48936563 to handle the traffic during the Hacker News conversation about the project.)

Puter claim this supports end-to-end encryption and that looks to be true - I inspected the WebSocket messages and traffic to my own HTTPS site was encrypted whereas requests and responses to http://www.example.com/ were in cleartext.

Here's the repo：https://github.com/HeyPuter/firefox-wasm for firefox-wasm . theogbob/WebkitWasm：https://github.com/theogbob/WebkitWasm is a similar project that compiles WebKit to WASM, but that one doesn't currently have an accessible online demo.

This is a link post by Simon Willison, posted on 16th July 2026：/2026/Jul/16/.

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