Truly independent web browser https://ladybird.org
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Jelle Raaijmakers 1aeb080250 LibCompress: Treat LZW decoding errors as end of stream
The LZW data for both GIF and TIFF images is sometimes intentionally
missing an end-of-information (EOI) code, which technically is a
decoding error, but in practive is handled gracefully by Firefox, Safari
and Chrome for GIFs and Safari for TIFFs. Let's mirror their behavior.

The included WPT test exposes the fact that trailing garbage bytes can
also result in decoding errors. We handle this in the LZW logic rather
than in the image decoding since our LZW implementation is currently
only used by GIF and TIFF decoding. The error is logged behind the
LZW_DEBUG flag.
2026-04-29 20:28:15 +02:00
.devcontainer Devcontainer: Update vcpkg cache feature for new vcpkg script location 2026-04-23 21:24:41 -06:00
.github CI: Build Gtk UI in Linux Sanitizer presets 2026-04-23 20:07:40 -06:00
AK AK: Simplify BigEndianInputBitStream::read_bits() 2026-04-29 20:28:15 +02:00
Base/res Base: Format internal Ladybird pages with prettier 2026-04-22 11:22:08 -04:00
Documentation Meta+LibWeb: Initial scaffolding for CSS value type parsing code gen 2026-04-29 11:42:57 +01:00
Libraries LibCompress: Treat LZW decoding errors as end of stream 2026-04-29 20:28:15 +02:00
Meta Meta: Replace GenerateNamedCharacterReferences with a python generator 2026-04-29 17:28:09 +01:00
Services LibWeb: Keep worker startup reachable until script load completes 2026-04-27 18:02:49 +02:00
Tests LibCompress: Treat LZW decoding errors as end of stream 2026-04-29 20:28:15 +02:00
UI UI/Gtk: Fix wheel scroll position on Wayland 2026-04-27 17:54:24 -04:00
Utilities js: Expose a synchronous gc() function in the REPL and script global 2026-04-26 01:26:44 +02:00
.clang-format
.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 LibJS: Allocate local variable indices in source order 2026-04-27 08:04:11 +02:00
Cargo.toml LibGfx: Implement YUV->RGBA color conversion for CPU painting 2026-04-18 01:25:00 -05:00
CMakeLists.txt Meta: Move linter helpers to a subdirectory 2026-04-23 07:31:19 -04:00
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
LICENSE
pyproject.toml Meta: Use "extend-select" to enable non-default python linters 2025-06-09 17:49:35 -04:00
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: Pin highway version 1.4.0 2026-04-23 20:33:08 -06:00

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.