EasyFilesConverter

JSON formatter & validator

Paste messy JSON and get it neatly indented - or minified - as you type. Invalid JSON is pointed out with the line and column of the problem.

Output

Indent

Free · No sign-up · Your files are processed on your device and never uploaded

How to use JSON formatter

  1. Paste or type…
    1

    Paste or type

    Put your content in the box - or try the example.

  2. Result appears instantly
    2

    Watch the result

    The result updates as you type - choose options above if needed.

  3. TXTCopy / Download
    3

    Download the result

    Ready in seconds. Your file never left your device.

Features

  • Pretty-print with 2 or 4 spaces or tabs, or minify to one line.
  • Validation with the exact error position.
  • Works on large files - nothing is sent to a server, so API keys and private data stay safe.

Private by design

Everything runs in your browser. Nothing you paste is uploaded, logged or stored - safe for API responses, tokens and customer data.

Questions

Is my JSON uploaded?

No. Formatting happens in your browser; the data never leaves your device.

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