NES JSON

Convert NES to JSON

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

Drop your .nes file here

or click to browse · max 100MB

🔒 Your file is processed in your browser where possible.

How to convert NES to JSON

  1. 1 Upload your .nes 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.