JSON File Converter

Paste your JSON data, give it a file name, then download it as a .json file. Supports formatting (pretty-print) and minifying. 100% client-side — data never leaves your browser.

Free Client-side only
The JSON will be validated as you type.
0 chars 0 lines 0 B
Special characters will be replaced. Press Enter to download.

How to use this tool

  1. 1
    Paste your JSON

    Copy JSON from your API response, code editor, or any source and paste it into the text area. The tool validates it in real-time.

  2. 2
    Enter a file name

    Type a name for your output file (e.g. test-run-2025). The .json extension is added automatically.

  3. 3
    Format or Minify

    Click Format JSON for pretty-printed output with 2-space indentation, or Minify JSON to collapse it to a single line for compact storage.

  4. 4
    Download or Copy

    Click Download .json to save the file, or Copy to put the JSON in your clipboard. That's it!