Parser

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A parser turns its input (often text in form of a file) into a more advantageous representation (usually a certain data structure in memory) to perform a specific task.

Common examples include:

parsers for markup languages (e.g. HTML/Markdown etc)

parsers for data-serialization formats (e.g. JSON/XML/YAML etc)

parsers used as part of/in conjunction with a compiler (in this case, the parser consumes the tokenized input emitted by the Lexer and ultimately feeds the resulting parse tree/concrete syntax tree into the compiler)

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opendatalab /MinerU

Star40.1k

A high-quality tool for convert PDF to Markdown and JSON.一站式开源高质量数据提取工具，将PDF转换成Markdown和JSON格式。

python pdf parser ocr pdf-converter extract-data document-analysis pdf-parser layout-analysis ai4science pdf-extractor-rag pdf-extractor-llm pdf-extractor-pretrain

UpdatedJul 18, 2025
Python

markedjs /marked

Star35.1k

A markdown parser and compiler. Built for speed.

markdown gfm parser compiler commonmark hacktoberfest

UpdatedJul 18, 2025
TypeScript

swc-project /swc

Sponsor

Star32.5k

Rust-based platform for the Web

javascript rust parser babel typescript compiler ecmascript swc typescript-compiler typescript-parser ecmascript-parser

UpdatedJul 18, 2025
Rust

cheeriojs /cheerio

Sponsor

Star29.6k

The fast, flexible, and elegant library for parsing and manipulating HTML and XML.

html jquery parser scraper dom cheerio selector hacktoberfest htmlparser2 htmlparser

UpdatedJul 17, 2025
TypeScript

postcss /postcss

Star28.8k

Transforming styles with JS plugins

css parser framework postcss ast

UpdatedJun 16, 2025
TypeScript

tree-sitter /tree-sitter

Sponsor

Star21.3k

An incremental parsing system for programming tools

c rust tree-sitter parser parsing incremental wasm

UpdatedJul 17, 2025
Rust

vectordotdev /vector

Star20k

A high-performance observability data pipeline.

rust parser events router pipeline metrics vector logs stream-processing forwarder observability

UpdatedJul 18, 2025
Rust

nikic /PHP-Parser

Star17.3k

A PHP parser written in PHP

php parser static-analysis ast

UpdatedJul 2, 2025
PHP

oxc-project /oxc

Star15.7k

⚓ A collection of JavaScript tools written in Rust.

javascript parser typescript compiler linter transpiler minifier

UpdatedJul 18, 2025
Rust

erusev /parsedown

Star14.9k

Better Markdown Parser in PHP

markdown php parser markdown-parser

UpdatedJun 5, 2025
PHP

json-iterator /go

Star13.8k

A high-performance 100% compatible drop-in replacement of "encoding/json"

go golang serialization parser json serializer deserialization json-parser

UpdatedMay 27, 2024
Go

jhy /jsoup

Star11.2k

jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.

css java html parser dom xml jsoup xpath css-selectors java-html-parser

UpdatedJul 18, 2025
Java

rust-bakery /nom

Star10k

Rust parser combinator framework

rust parser parse parser-combinators grammar nom byte-array

UpdatedFeb 8, 2025
Rust

munificent /craftinginterpreters

Star9.9k

Repository for the book "Crafting Interpreters"

c java language markdown parser interpreter bytecode compiler book scripting-language lox

UpdatedAug 7, 2024
HTML

terser /terser

Star9k

🗜 JavaScript parser, mangler and compressor toolkit for ES6+

javascript parser es6 uglifyjs compressor mangler

UpdatedJul 5, 2025
JavaScript

tobymao /sqlglot

Star8k

Python SQL Parser and Transpiler

mysql python bigquery parser postgres sql spark presto hive clickhouse sqlite snowflake optimizer transpiler redshift databricks tsql trino sqlparser duckdb

UpdatedJul 18, 2025
Python

mvdan /sh

Sponsor

Star7.9k

A shell parser, formatter, and interpreter with bash support; includes shfmt

go shell bash parser formatter interpreter beautify posix mksh shfmt

UpdatedJul 7, 2025
Go

TomWright /dasel

Sponsor

Star7.5k

Select, put and delete data from JSON, TOML, YAML, XML and CSV files with a single tool. Supports conversion between formats and can be used as a Go package.