#parser

🌿 Powerful and seamless HTML-aware ERB toolchain.

A 100% compliant, self-hosted javascript parser - https://meriyah.github.io/meriyah

Transforms complex documents like PDFs and Office docs into LLM-ready markdown/JSON for your Agentic workflows.

Python SDK for OCR and document parsing in the cloud with LlamaParse

Pure-Rust YAML 1.2 ecosystem: zero unsafe, 100% spec compliance (406/406 official suite), streaming-first serde, lossless CST, JSON-Schema validation. Library + CLI (noyafmt, noyavalidate) + LSP + MCP + WASM bindings.

Blazing fast Vue.js Toolchain. Compiler, Linter, Type Checker, Formatter, LSP, Story System, Editor Extensions. This already passed 13k+ test suites, includes real world E2E.

:angel: The ultimate angle brackets parser library parsing HTML5, MathML, SVG and CSS to construct a DOM based on the official W3C specifications.

Mermaid.js, but headless, in Rust.

A collection of network related libraries that includes protocol parsers and daemons

Tree-sitter parser for Pkl

A thrift and protobuf implementation in pure rust with high performance and extensibility.

PostCSS Tools and Plugins

👀 Provides a composer package with a front-matter parser.

☁️ The fastest HTML to markdown convertor on GitHub. Optimized for LLMs and supports streaming.

Typescript library for parsing crontab instructions

LL(k) and LALR(1) parser generator for Rust and C#

The skinny framework for creating slide deck from Markdown

Rust language bindings for Microsoft Playwright

libopenapi is a fully featured, high performance OpenAPI 3.2, 3.1, 3.0, Overlays and Arazzo parser, library, validator and toolkit for go applications.

The Elegant Parser

An efficient, reliable parser for CommonMark, a standard dialect of Markdown

Comprehensive tooling for working with OpenAPI definitions.

Typescript SDK for OCR and document parsing in the cloud with LlamaParse

A framework agnostic fastest and beautiful documentation & markdown tooling

Type-safe combinatorial CLI parser for TypeScript

Command line parsing, invocation, and rendering of terminal output.

Convert CSV file to JSON https://www.npmjs.com/package/convert-csv-to-json

LIEF - Library to Instrument Executable Formats (C++, Python, Rust)

Rusty Object Notation

High-performance browser-grade HTML5 parser