ZeroWeb
GitHub

Experimental browser project

Build for the web
from the engine up.

ZeroWeb is an experimental, cross-platform browser project written in Rust—an embeddable WebView and a desktop browser, growing from the same core.

Explore ZeroWeb View source

Built in public · MIT licensed · Experimental by design

zero://render
One page.
Every layer.
DOM
CSS
PAINT

The web deserves more than a black box. ZeroWeb makes the browser’s layers explicit: parsing, style, layout, paint, security, and the runtime boundaries between them.

Two ways to use it

One core. Two products.

02
⌘

ZeroWebView

A reusable Rust WebView boundary for embedding page capabilities in other applications.

View WebView library

From request to pixel

The web, made legible.

ZeroWeb separates the systems that turn a URL into a rendered page, with clear responsibilities at each boundary.

  1. 01NetworkResources & navigation
  2. 02DOM + CSSDocument & rules
  3. 03StyleCascade & computed values
  4. 04LayoutGeometry & flow
  5. 05RenderPaint & composite
Read the architecture guide

What guides the work

Made to be understood.

↗

Rust throughout

Core systems and host layers are built in the Rust ecosystem.

◇

Standards-driven

Web behavior is verified against WPT, CSSWG reftests, and browser comparisons.

⊹

Boundaries matter

Security, process, and runtime responsibilities are deliberate—not accidental.

⌁

AI, with review

AI can contribute, but every change still needs a clear boundary and verification.

In active development

An engine is a long conversation with the web.

The project is experimental. The foundations are in place; browser product work, rendering compatibility, and complete web API behavior remain in progress.

See the roadmap
FoundationDOM, CSS, style, layout, rendering, network & security basics
In progressBrowser shell, render compatibility, DOM & web API coverage
AheadWebGL / WebGPU, SVG documents, animation fidelity

Start exploring

Begin with a real window.

The repository includes both a browser application and a small WebView rendering demo. Choose the path you want to inspect first.

ZeroBrowser

Launch the desktop browser entry point.

$ cargo run --bin zero-browser

WebView demo

Run the smallest rendering pipeline demo.

$ cargo run --bin webview-demo

See the README for platform prerequisites and build details.

Build in the open

Follow the work.
Help shape the engine.

Explore the code, read the docs, test a path, or contribute a carefully verified change.

Visit GitHub Read contributing guide