No. Processing runs locally in your browser, so your files and text do not leave your device.

How do I convert CSV and JSON?

Follow the steps above to convert CSV and JSON. The result is generated directly in your browser.

Yes. It is free to use with no signup.

Can I use it on mobile?

Yes. The interface works on modern mobile browsers, tablets, and desktop browsers.

Large inputs depend on your device memory and browser performance. If a file is very large, try processing fewer items at once.

Current versions of Chrome, Edge, Safari, and Firefox are recommended.

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Convert CSV files or pasted data to JSON and back.

Is my data uploaded?: No. Processing runs locally in your browser, so your files and text do not leave your device.
How do I convert CSV and JSON?: Follow the steps above to convert CSV and JSON. The result is generated directly in your browser.
Is this tool free?: Yes. It is free to use with no signup.
Can I use it on mobile?: Yes. The interface works on modern mobile browsers, tablets, and desktop browsers.
What should I know about large files?: Large inputs depend on your device memory and browser performance. If a file is very large, try processing fewer items at once.
Which browsers work best?: Current versions of Chrome, Edge, Safari, and Firefox are recommended.