mholt/PapaParse

Health v2 · maintenance only

Adoption not part of the score

13571 stars · 1194 forks observed · 2026-09-21

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Papa Parse is a fast, dependency-free CSV (delimited text) parser for JavaScript that runs in the browser and Node.js. It streams large files via web workers, auto-detects delimiters, handles malformed input per RFC 4180, and converts both CSV-to-JSON and JSON-to-CSV.

Use cases

• parse csv files in the browser
• convert csv to in javascript
• convert to csv for export
• stream and parse a multi-gigabyte csv without crashing the page
• parse a remote csv file over http
• auto-detect the delimiter of a delimited text file
• parse csv uploads client-side without sending data to a server
• parse csv streams in node.js

When to choose

• you need a battle-tested, RFC 4180-correct CSV parser in JavaScript
• you must parse very large CSV files in the browser without blocking the UI
• you want client-side CSV processing for privacy reasons
• you need both CSV parsing and unparse (JSON to CSV) with no dependencies

When to avoid

• you need full ETL pipelines or data-frame analytics rather than parsing
• you work in a non-JavaScript stack with mature native CSV tooling
• you need writing very exotic delimited formats with custom quoting beyond CSV conventions

Facets

library · maturity stable

parser serialization csv developer-tools files web-development developer-tools browser cross-platform csv-parser csv-to- -to-csv streaming web-workers delimiter-detection no-dependencies data-engineering nodejs web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mholt/PapaParse")