Truly independent web browser https://ladybird.org
  • C++ 54.6%
  • HTML 25.8%
  • JavaScript 12.6%
  • Rust 4.4%
  • Python 0.9%
  • Other 1.5%
Find a file
Andreas Kling 76eebac88f LibWeb: Add content blocker style tests
Cover cosmetic style replacement in documents, subframes, and shadow
roots. Cover srcdoc fallback-base URL matching and stale style caches
across content-blocking toggles.
2026-05-21 21:16:56 +02:00
.devcontainer Devcontainer: Fixes for fedora 2026-04-30 10:10:25 +02:00
.github Meta+CI: Add pyright type checking to lint_python.sh 2026-05-13 08:13:51 -05:00
AK AK+Tests: Add a Duration function to scale by a rational 2026-05-19 15:20:58 -05:00
Base/res LibWeb: Rename ContentFilter to ContentBlocker 2026-05-21 21:16:56 +02:00
Documentation LibWeb: Mark pseudo-elements as either synthetic or element-reference 2026-05-21 14:26:22 +01:00
Libraries LibWeb: Set about base URL before document URL 2026-05-21 21:16:56 +02:00
Meta LibGC: Introduce ConservativeHashMap 2026-05-21 18:29:41 +02:00
Services LibWebView: Share content blocker lists as buffers 2026-05-21 21:16:56 +02:00
Tests LibWeb: Add content blocker style tests 2026-05-21 21:16:56 +02:00
UI LibWeb: Rename ContentFilter to ContentBlocker 2026-05-21 21:16:56 +02:00
Utilities LibWeb: Make the Rust HTML parser unconditional 2026-05-17 15:35:56 +02:00
.clang-format Meta: Enforce newlines around namespaces 2025-05-14 02:01:59 -06:00
.clang-tidy Meta: Disable clang-tidy's const correctness checks 2025-07-08 11:04:15 -04:00
.clangd Meta: Enable angled brackets in clangd 2026-03-20 19:32:14 +01:00
.editorconfig
.gitattributes
.gitignore Meta: Ignore log files 2026-04-23 13:50:01 -04:00
.mailmap
.pre-commit-config.yaml
.prettierignore Tests: Exclude JS AST and bytecode tests from prettier checks 2026-02-19 02:45:37 +01:00
.prettierrc Meta: Increase the line length enforced by prettier to 120 2025-10-31 19:55:50 -04:00
.ycm_extra_conf.py Meta: Sort all python imports 2025-06-09 11:25:14 -04:00
Cargo.lock LibWeb: Replace the HTML tokenizer with Rust 2026-05-15 21:01:40 +02:00
Cargo.toml LibWeb: Replace the HTML tokenizer with Rust 2026-05-15 21:01:40 +02:00
CMakeLists.txt Meta: Remove a legacy NoCoverage target 2026-05-05 22:08:24 +02:00
CMakePresets.json CMake+CI: Use the same preset names on every platform 2026-01-17 12:18:46 -07:00
CODE_OF_CONDUCT.md
CONTRIBUTING.md Meta: Disallow PR descriptions entirely generated by AI 2026-04-05 16:17:29 +02:00
ISSUES.md Everywhere: Document use of ladybird.py over ladybird.sh 2025-05-29 16:24:17 -04:00
LICENSE Meta: Update license year 2025-02-10 11:40:57 +00:00
pyproject.toml Meta+CI: Add pyright type checking to lint_python.sh 2026-05-13 08:13:51 -05:00
README.md
rust-toolchain.toml Meta: Pin Rust toolchain version 2026-04-16 23:42:22 +02:00
rustfmt.toml Rust: Add a config file for rustfmt 2026-04-18 08:05:47 -04:00
SECURITY.md
vcpkg-configuration.json
vcpkg.json Meta: Ensure version overrides in vcpkg.json are consistent 2026-05-05 22:08:24 +02:00

Ladybird

Ladybird is a truly independent web browser, using a novel engine based on web standards.

Important

Ladybird is in a pre-alpha state, and only suitable for use by developers

Features

We aim to build a complete, usable browser for the modern web.

Ladybird uses a multi-process architecture with a main UI process, several WebContent renderer processes, an ImageDecoder process, and a RequestServer process.

Image decoding and network connections are done out of process to be more robust against malicious content. Each tab has its own renderer process, which is sandboxed from the rest of the system.

At the moment, many core library support components are inherited from SerenityOS:

  • LibWeb: Web rendering engine
  • LibJS: JavaScript engine
  • LibWasm: WebAssembly implementation
  • LibCrypto/LibTLS: Cryptography primitives and Transport Layer Security
  • LibHTTP: HTTP/1.1 client
  • LibGfx: 2D Graphics Library, Image Decoding and Rendering
  • LibUnicode: Unicode and locale support
  • LibMedia: Audio and video playback
  • LibCore: Event loop, OS abstraction layer
  • LibIPC: Inter-process communication

How do I build and run this?

See build instructions for information on how to build Ladybird.

Ladybird runs on Linux, macOS, Windows (with WSL2), and many other *Nixes.

How do I read the documentation?

Code-related documentation can be found in the documentation folder.

Get in touch and participate!

Join our Discord server to participate in development discussion.

Please read Getting started contributing if you plan to contribute to Ladybird for the first time.

Before opening an issue, please see the issue policy and the detailed issue-reporting guidelines.

The full contribution guidelines can be found in CONTRIBUTING.md.

License

Ladybird is licensed under a 2-clause BSD license.