# papaparse > Fast and powerful CSV parser for the browser that supports web workers and streaming large files. Converts CSV to JSON and JSON to CSV. Latest version **5.7.0** (published 2026-08-24) · MIT license · 0 weekly downloads ## Install ```sh npm install papaparse pnpm add papaparse yarn add papaparse bun add papaparse ``` ## Health **Score 68/100 (B)** — status: active. Positive: has types package; no vulnerabilities; recently updated; high maintenance score; high quality score; popular repo. Warnings: low downloads; no esm support. ## Facts | | | |---|---| | Version | 5.7.0 | | Published | 2026-08-24 | | First published | 2014-11-19 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | separate (@types/papaparse) | | Module format | CommonJS | | Dependencies | 0 | | Unpacked size | 264.3 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 13574 | | Author | Matthew Holt | | Maintainers | mholt, pokoli | | Keywords | csv, parser, parse, parsing, delimited, text, data, auto-detect, comma, tab, pipe, file, filereader, stream, worker, workers, thread, threading, multi-threaded | ## Links - npm: https://www.npmjs.com/package/papaparse - Repository: https://github.com/mholt/PapaParse - Homepage: https://www.papaparse.com/ - Issues: https://github.com/mholt/PapaParse/issues - npm.io page: https://npm.io/package/papaparse ## Alternatives - [@lexical/table](https://npm.io/package/@lexical/table.md) — 3.0M weekly downloads - [mantine-datatable](https://npm.io/package/mantine-datatable.md) — 98.2K weekly downloads - [react-native-collapsible-tab-view](https://npm.io/package/react-native-collapsible-tab-view.md) — 70.6K weekly downloads - [@handsontable/vue3](https://npm.io/package/@handsontable/vue3.md) — 16.1K weekly downloads - [vuewordcloud](https://npm.io/package/vuewordcloud.md) — 7.2K weekly downloads ## Recent versions - 5.7.0 (latest) — 2026-08-24 - 5.0.0-beta.0 (beta) — 2018-11-21 - 5.6.1 — 2026-08-24 - 5.6.0 — 2026-08-13 - 5.5.5 — 2026-08-13 - 5.5.4 — 2026-06-19 - 5.5.3 — 2025-05-19 - 5.5.2 — 2025-01-28 - 5.5.1 — 2025-01-10 - 5.5.0 — 2025-01-09 - 5.4.1 — 2023-03-23 - 5.4.0 — 2023-03-02 - 5.3.2 — 2022-03-15 - 5.3.1 — 2021-05-28 - 5.3.0 — 2020-08-25 - … 35 more at https://npm.io/package/papaparse/versions ## README Parse CSV with JavaScript ======================================== Papa Parse is the fastest in-browser CSV (or delimited text) parser for JavaScript. It is reliable and correct according to [RFC 4180](https://tools.ietf.org/html/rfc4180), and it comes with these features: - Easy to use - Parse CSV files directly (local or over the network) - Fast mode - Stream large files (even via HTTP) - Reverse parsing (converts JSON to CSV) - Auto-detect delimiter - Worker threads to keep your web page reactive - Header row support - Pause, resume, abort - Can convert numbers and booleans to their types - One of the only parsers that correctly handles line-breaks and quotations Papa Parse has **no dependencies**. Install ------- papaparse is available on [npm](https://www.npmjs.com/package/papaparse). It can be installed with the following command: ```shell npm install papaparse ``` If you don't want to use npm, [papaparse.min.js](https://unpkg.com/papaparse@latest/papaparse.min.js) can be downloaded to your project source. Usage ----- ```js import Papa from 'papaparse'; Papa.parse(file, config); const csv = Papa.unparse(data[, config]); ``` Homepage & Demo ---------------- - [Homepage](https://www.papaparse.com) - [Demo](https://www.papaparse.com/demo) To learn how to use Papa Parse: - [Documentation](https://www.papaparse.com/docs) The website is hosted on [Github Pages](https://pages.github.com/). Its content is also included in the docs folder of this repository. If you want to contribute on it just clone the master of this repository and open a pull request. Papa Parse for Node -------------------- Papa Parse can parse a [Readable Stream](https://nodejs.org/api/stream.html#stream_readable_streams) instead of a [File](https://www.w3.org/TR/FileAPI/) when used in Node.js environments (in addition to plain strings). In this mode, `encoding` must, if specified, be a Node-supported character encoding. The `Papa.LocalChunkSize`, `Papa.RemoteChunkSize` , `download`, `withCredentials` and `worker` config options are unavailable. Papa Parse can also parse in a node streaming style which makes `.pipe` available. Simply pipe the [Readable Stream](https://nodejs.org/api/stream.html#stream_readable_streams) to the stream returned from `Papa.parse(Papa.NODE_STREAM_INPUT, options)`. The `Papa.LocalChunkSize`, `Papa.RemoteChunkSize` , `download`, `withCredentials`, `worker`, `step`, and `complete` config options are unavailable. To register a callback with the stream to process data, use the `data` event like so: `stream.on('data', callback)` and to signal the end of stream, use the 'end' event like so: `stream.on('end', callback)`. Get Started ----------- For usage instructions, see the [homepage](https://www.papaparse.com) and, for more detail, the [documentation](https://www.papaparse.com/docs). Tests ----- Papa Parse is under test. Download this repository, run `npm install`, then `npm test` to run the tests. Contributing ------------ To discuss a new feature or ask a question, open an issue. To fix a bug, submit a pull request to be credited with the [contributors](https://github.com/mholt/PapaParse/graphs/contributors)! Remember, a pull request, *with test*, is best. You may also discuss on Twitter with [#PapaParse](https://twitter.com/search?q=%23PapaParse&src=typd&f=realtime) or directly to me, [@mholt6](https://twitter.com/mholt6). If you contribute a patch, ensure the tests suite is running correctly. We run continuous integration on each pull request and will not accept a patch that breaks the tests. --- _Source: https://npm.io/package/papaparse · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._