JSON Formatter & Converter

All-in-one JSON tool: Format, Minify, Validate, and Convert to PHP, Dart, TS, Go, CSV, YAML, and more.

Drag & drop a JSON file here, or click to browse

File is read locally — nothing is uploaded to any server

Features

  • JSON File Upload: Upload a .json file directly — read locally in your browser, nothing is sent to any server.
  • Drag & Drop: Drag and drop a JSON file onto the drop zone for quick loading.
  • JSON Formatter/Beautifier: Indent and format JSON strings with colors.
  • JSON Minifier: Remove whitespace to reduce payload size.
  • JSON Validator: Check for syntax errors with precise locations.
  • Converters: Convert JSON to PHP Array, Dart Class, TypeScript Interface, Go Struct, CSV, YAML, and Query String.
  • Visualizers: View JSON as an interactive Tree or HTML Table.

How to Use

  • Upload a JSON file using the file picker, or drag & drop a file onto the drop zone.
  • Alternatively, paste your JSON code into the Input JSON box.
  • Use the buttons to Beautify, Minify, or Validate the JSON in place.
  • Select a conversion mode from the dropdown (e.g., PHP Array, Dart Class) to generate code in the Output box.
  • Click Tree View or HTML Table to visualize the data.
  • Use the Copy button to copy the result to your clipboard.