kreuzberg-dev/html-to-markdown

Implements a visitor pattern with custom callbacks for content filtering and URL rewriting, enabling domain-specific Markdown dialects. Achieves 150-280 MB/s throughput via a Rust core while supporting 12 language bindings (Python, Node.js, Go, Ruby, PHP, Java, C#, Elixir, R, WASM, and FFI) with identical output across runtimes. Extracts metadata including titles, headers, structured data (JSON-LD, Microdata, RDFa), and tabular data as part of conversion, with built-in HTML sanitization via ammonia.

565 stars. Actively maintained with 201 commits in the last 30 days.