Code Flux

JSON Master

Format, validate, and explore JSON with an interactive tree view.

What is JSON Master?

JSON Master is a comprehensive JSON toolkit that helps developers format, validate, and explore JSON data. JSON (JavaScript Object Notation) is the most common data format for APIs and configuration files. This tool can beautify minified JSON, validate syntax errors, and provide an interactive tree view for exploring complex nested structures. Perfect for debugging API responses or working with configuration files.

How to Use

  1. Paste your JSON into the input area or click 'Load Sample' to try it out
  2. Click 'Format' to beautify the JSON or 'Minify' to compress it
  3. Switch between 'Formatted' and 'Tree View' to explore the data
  4. Copy the formatted output or use the validation feedback to fix errors

Common Use Cases

  • Formatting API responses for easier reading
  • Validating JSON configuration files
  • Exploring complex nested JSON structures
  • Minifying JSON for storage or transmission
  • Debugging JSON parsing errors

Frequently Asked Questions

Format adds proper indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to create the smallest possible file size, which is ideal for storage or API transmission.
Tree View displays your JSON as an interactive, collapsible hierarchy. You can expand/collapse nested objects and arrays, making it much easier to navigate and understand complex data structures.
Common issues include: trailing commas after the last item, single quotes instead of double quotes, unquoted property names, or missing commas between items. The tool shows the exact error location to help you fix it.
Yes! You can choose between 2 or 4 space indentation using the dropdown menu. This helps match your project's coding style or personal preference.
No hard limit, but very large JSON files (several MB) may be slower to process since everything runs in your browser. For typical API responses and config files, performance is instant.

Privacy Guarantee

We process all data directly in your browser. Nothing is sent to our servers. Your data stays on your device, ensuring complete privacy and security. Feel free to use this tool with sensitive information.