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devvkit

devvkit / dev

JSON Formatter

Format, validate, minify, and prettify JSON data instantly.

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Format, validate, and beautify JSON data with syntax highlighting and tree view. Supports minification, sorting, and error detection: all in your browser with no data sent to any server.

>[x]Features
  • -Pretty-print JSON with configurable indentation (2 or 4 spaces)
  • -Minify JSON to a single line for storage or transmission
  • -Real-time syntax validation with detailed error messages
  • -Sort object keys alphabetically for consistent output
  • -Tree view for navigating deeply nested JSON structures
  • -Copy formatted output with one click
>>Use Cases
  • >Debugging and inspecting JSON API responses during development
  • >Formatting configuration files for readability in code reviews
  • >Validating JSON before using it in production systems
  • >Preparing clean JSON samples for documentation and testing

Frequently Asked Questions

>Is my JSON data sent to a server??
No. All JSON processing happens in your browser. Your data never leaves your device.
>What file sizes does it support??
Tested reliably up to 50MB. Performance depends on your device's available memory.
>Can I use it offline??
Once the page loads, the tool works fully offline since all processing is client-side.
>Does it support JSON5 or JSONC??
Currently supports standard JSON only. JSON5 support is planned.