Question 1

Will this fix invalid JSON automatically?

Accepted Answer

No, it formats and validates. If your JSON has syntax errors, you'll see exactly where the problem is so you can fix it yourself.

Question 2

Is JSON Formatter free to use?

Accepted Answer

Yes, JSON Formatter is completely free with no sign-up, usage limits, or paywall.

Question 3

Does JSON Formatter send my data to a server?

Accepted Answer

No. JSON Formatter runs entirely client-side in your browser. Nothing you enter is transmitted or stored anywhere, so it's safe to use with sensitive data.

Question 4

Can I use JSON Formatter on mobile?

Accepted Answer

Yes, it works on any modern mobile or desktop browser since it's a lightweight, client-side tool with no app install required.

Question 5

Is there a file size limit?

Accepted Answer

There's no hard server-side limit since everything runs in your browser, but very large payloads (tens of MBs) may slow down rendering depending on your device.

JSON Formatter

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