JSON Formatter & Validator

Prettify & Minify

Ultra-fast JSON formatter and validator for developers. Identifies syntax errors with exact line/column indicators, applies 2/4 space indentation or minification.

All Tools

Interactive Tool Console

Client-Side Execution • Runs in browser

Input (JSON)

Formatted Output

Live API Integration Public Edge API

Call this tool in your codebase or backend services directly via REST API.

curl -X POST "https://findfreeapi.com/api/v1/tools/json-format" \
  -H "Content-Type: application/json" \
  -d '{"json":"{\"name\":\"FreeAPI\",\"type\":\"gateway\"}","indent":2,"sortKeys":true}'

POST/api/v1/tools/json-format

No API Key Required (Public Edge)

Key Standards & Highlights

Instant JSON syntax error diagnostics with line/col reporting

2 spaces, 4 spaces and Tab indentation

One-click Minification with compression stats

Deep alphabetical key sorting for nested structures

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