Convert, format, and minify CSV and JSON data — all in your browser.
Click or drop a .csv or .json file here
Or paste your data in the box below
Keep going with what you just made.
name,age
Ada,28
Grace,31[
{ "name": "Ada", "age": 28 },
{ "name": "Grace", "age": 31 }
]CSV ↔ JSON, both directions
Sample output — your files never leave your device.
Paste the CSV (headers in the first row) into the input, pick "CSV → JSON", and convert — each row becomes a JSON object keyed by the headers. Copy the result or download it as a .json file.
Use "JSON → CSV" — an array of objects becomes CSV rows with a header line. The output downloads as a .csv that opens directly in Excel or Google Sheets.
Format adds indentation and line breaks so JSON is readable; minify strips all whitespace so it's as small as possible. Same data, different packaging.
No — conversion is pure JavaScript in your browser. Nothing you paste is sent anywhere, which matters for data containing personal or business information.
Yes. CSV / JSON Tools is completely free on GenRise, with no limits, watermarks, or hidden paywalls.
No. Every GenRise tool works instantly in your browser — no account, email, or sign-up required.
No. CSV / JSON Tools runs entirely on-device using your browser, so your files are never uploaded or stored anywhere. All processing happens locally.
CSV / JSON Tools uses your browser's built-in capabilities — Canvas, WebAssembly, and File APIs — to process files locally. Convert, format, and minify CSV and JSON data. Simply open the tool, select your file, and the result is generated instantly on your device.
Yes. Since CSV / JSON Tools processes everything in your browser, your files never leave your device. There is no server-side storage, no tracking of file contents, and no data collection.
Yes. CSV / JSON Tools works on any modern browser, including mobile devices. It is fully responsive and optimized for both desktop and mobile use.
GenRise CSV / JSON Tools handles the four everyday data chores in one place: convert CSV to a JSON array, convert JSON back to CSV, pretty-print JSON with proper indentation, or minify it for production use. Paste your data, pick a mode, and the result is ready to copy or download as a .json or .csv file. Conversion happens entirely in your browser — a safer home for data that might contain emails, IDs or other values you shouldn't paste into a server-side converter.
CSV / JSON Tools runs entirely in your browser. Anything you enter or upload is processed locally and never sent to a server. There is no account required, no tracking of your content, and no data collection.
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