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npm · #2682 most downloaded on npm
Fast and powerful CSV parser for the browser that supports web workers and streaming large files. Converts CSV to JSON and JSON to CSV.
Last release 1 months ago
24 Aug 2026
Release timing varies
gaps range from 2 weeks to 1.8 years
Rarely documented
notes for 10 of 49 stable releases
Nothing withdrawn
no release was ever pulled
12 years old
50 releases · first in 2014
We are happy to annunce a new minor release of PapaParse.
We are happy to annunce a new minor release of PapaParse.
This release includes the following change:
Add the `downloadTimeout` option to abort slow remote requests after a configurable duration (https://github.com/mholt/PapaParse/pull/1138)
Thanks @Kocayilmaz for contributing it
downloadTimeout option to abort slow remote requests after a configurable duration (#1138, #786)Call transformHeader only once per header in streaming mode
transformHeader only once per header in streaming mode (#1130)One column per quarter.
We are happy to annunce a new minor release of PapaParse.
We are happy to annunce a new minor release of PapaParse.
This release includes the following change:
Thanks @Kocayilmaz for contributing it
Improve automatic delimiter detection by prioritizing row consistency over field count (#1128, #1077)
Date.toISOString(), preserving expanded years and writing invalid dates as empty fields (#1140)Strip the byte order mark (BOM) from header column names
Papa.BYTE_ORDER_MARK (#1096)renamedHeaders with duplicate headers (#1024, #1102)Avoid infinite loop with duplicate header counting
Only attempt to parse headers once, fixing performance issue
Revert "Remove ES6 features to allow minifying papaparse file" — updated grunt-contrib-uglify instead to support ES6+
grunt-contrib-uglify instead to support ES6+Add skipFirstNLines option to skip first N lines before parsing (#1021, #738)
skipFirstNLines option to skip first N lines before parsing (#1021, #738)renamedHeaders to parse result meta, reporting original-to-renamed header mappings (#990)escapeFormulae option to handle boolean values correctly (#1025)for loop instead of for...in for header parsing to only iterate over array elements (#987)Remove jsperf.com links from README.md.
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