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CSV to JSON

Convert spreadsheet exports to a clean JSON array of objects, ready for APIs, apps and scripts. Free, no sign-up, and your files never leave your device.

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Drop CSV files here

or choose files to convert to JSON

lock Processed locally. Nothing is uploaded to any server.

How to convert CSV to JSON

1

Add your CSV files

Drop them above or choose them from your device. You can add many at once.

2

Convert to JSON

JSON is preselected. Click Convert, or Convert all for a batch.

3

Download

Your JSON files are ready instantly. Nothing was uploaded.

What people use it for

CSV to JSON FAQ

How are columns mapped?

The first row becomes the keys; every other row becomes an object.

Are quoted commas handled?

Yes. Quoted fields, escaped quotes and line breaks inside cells all work.

Is it free?

Yes. File Fusion is free and open source, with no limits, ads or watermarks.

Are my files uploaded?

No. The conversion runs in your browser, so your files never leave your device.

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