Convert tabular data between CSV and JSON arrays.
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Starting points for your own code. Run them in the environment shown below.
Node.js 22+ · ES module (.mjs)
Current inputs apply only to fields used by the example. Selected files are not embedded.
Install dependencies
npm install papaparseimport Papa from "papaparse";
const input = 'name,note\nAlice,"hello, world"';
const parsed = Papa.parse(input, { header: true, skipEmptyLines: true });
if (parsed.errors.length) throw new Error(JSON.stringify(parsed.errors));
console.log(JSON.stringify(parsed.data, null, 2));
console.log(Papa.unparse(parsed.data));Convert tabular data between CSV and JSON arrays.
The first CSV row defines column names. Values stay strings. JSON input must be an array of flat objects.
Text 1 MB
Split inputs that exceed the limit. If a format or algorithm is unsupported, choose a tool that matches your requirements instead of silently changing the format.