GR3 JSON

Convert GR3 to JSON

Free online converter — change .gr3 files into .json format instantly. Drag, drop, convert, download.

Drop your .gr3 file here

or click to browse · max 100MB

🔒 Your file is processed in your browser where possible.

How to convert GR3 to JSON

  1. 1 Upload your .gr3 file using the dropzone above.
  2. 2 Click "Convert to JSON" and watch the progress bar.
  3. 3 Once complete, click Download to save your new .json file.