Arix

Arix is a web browser engine written in Zig for the purpose of high performance and low memory usage.

Status

The project currently includes:

• HTML parser
• CSS engine: parsing, selector matching, cascade, and computed styles
• Text decoding and a basic DOM
• Fonts: loading, matching, and text shaping
• Layout: basic blocks and text wrapping
• Paint: backgrounds, borders, and text

Arix is still under active development. Styling, layout, and painting are currently partial and incomplete. Networking and the JavaScript engine are not yet implemented.

Requirements

Requires Zig 0.17.0.

Linux

Ensure that Python 3 is on your machine.

Examples

zig build example:<name>

See examples.

Testing

Tests cover HTML and CSS parsing, text decoding, DOM, styles, font matching, shaping, text measurement, line breaks, layout, and painting. HTML parser's behavior is tested against the html5lib test suite.

Build and run the test:

zig build test

Add -Ddebug=true for debug output and --summary all for a full summary. Use -Dtest-filter=<name> to filter tests.

For example:

zig build test --summary all -Dtest-filter=tokenizer

Benchmarks

Compiled in ReleaseFast mode and run benchmarks:

zig build bench -- [--iterations N] FILE.html FILE.css ...

or you can directly use commands in Makefile:

make bench_html
make bench_css

Contributing

See CONTRIBUTING.md