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Andreas Kling f47b6f3270 LibWeb: Reduce CSS parser token memory usage
Store CSS token payloads in a variant so each token only carries the
state needed by its type. Keep delimiter, number, hash, string, and
dimension data separate instead of storing every possible payload on
every token.

Use a smaller component-value token for function and block boundary
metadata. These component values only need token type, original source
text, and source positions, so avoid embedding full token payload
storage inside every Function and SimpleBlock.

Shrink CSS source positions to explicit 32-bit counters. Guard the C++
and Rust tokenizer paths against overflow. Add size assertions for the
hot Token and ComponentValue types so future growth is intentional.
2026-06-13 14:57:52 +02:00
.devcontainer Documentation: List ncurses as a build dependency 2026-06-07 12:05:42 +12:00
.github Meta: Remove obsolete Lagom host-tools build 2026-06-08 01:11:40 +02:00
AK Everywhere: Make use of Badge with multiple or derived types 2026-06-11 21:55:56 +02:00
Base/res LibWebView: Elide overflowed title text on about:history 2026-06-11 09:18:17 -04:00
Documentation Documentation: Add a document about the design of the media pipeline 2026-06-09 19:25:29 +02:00
Libraries LibWeb: Reduce CSS parser token memory usage 2026-06-13 14:57:52 +02:00
Meta Meta+LibWeb/WebGL: Route all GL calls through generated GLFunctions 2026-06-13 01:58:43 +02:00
Services LibWebView: Add async cookie deletion internals 2026-06-13 10:18:33 +02:00
Tests LibWeb: Avoid media rule reevaluation for matchMedia 2026-06-13 14:00:53 +02:00
UI UI/Qt: Preserve bitmap fallback for Vulkan web view 2026-06-12 21:45:22 +02:00
Utilities LibGfx: Split image decoders into a separate library 2026-06-10 11:55:48 +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 Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gdbinit Meta: Restore serenity_gdb.py 2026-05-28 14:33:25 +01:00
.gitattributes LibGfx: Remove support for the various "portable" image formats 2024-06-17 21:57:35 +02:00
.gitignore Meta: Ignore log files 2026-04-23 13:50:01 -04:00
.lldbinit Meta: Add lldb pretty printers for AK types 2026-05-28 11:55:24 +01:00
.mailmap Meta: Update my e-mail address everywhere 2024-10-04 13:19:50 +02:00
.pre-commit-config.yaml Meta: Replace deprecated pre-commit stage name 2024-10-18 09:40:59 +02:00
.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 LibURL: Implement URLPattern in Rust 2026-05-28 09:27:41 +02:00
Cargo.toml LibURL: Implement a URL parser in rust 2026-05-28 09:27:41 +02:00
CMakeLists.txt Meta: Remove obsolete Lagom host-tools build 2026-06-08 01:11:40 +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 Meta: Add code of conduct (from the Ruby community) 2024-10-02 09:49:52 +02:00
CONTRIBUTING.md Everywhere: Update contribution guidelines 2026-06-05 10:20:15 +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 copyright year 2026-06-07 21:11:24 +02:00
pyproject.toml Tests/LibWeb: Run imported WPT handlers in HTTP test server 2026-06-06 13:48:43 +02:00
README.md Everywhere: Update contribution guidelines 2026-06-05 10:20:15 +02:00
rust-toolchain.toml Meta: Revert to a stable rust compiler 2026-06-02 20:12:41 +02:00
rustfmt.toml Meta: Revert to a stable rust compiler 2026-06-02 20:12:41 +02:00
SECURITY.md Documentation: Make updates to align better with new issue template 2024-10-31 09:18:08 +01:00
vcpkg-configuration.json Meta: Add overlay port for vulkan-loader 2024-07-07 15:56:59 +02:00
vcpkg.json Meta: Add vcpkg overlay port for wuffs 0.3.4 2026-06-10 20:29:11 +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 issue and development discussions.

Please read Getting involved with Ladybird if you're new to Ladybird and want to help.

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

The project participation guidelines can be found in CONTRIBUTING.md.

License

Ladybird is licensed under a 2-clause BSD license.