JSON Formatter
Free, browser-based JSON formatter, validator, and TypeScript generator. 100% Client-Side and Privacy-First.
Capabilities
Turns messy, minified JSON into readable, properly indented structure, with built-in validation to catch syntax errors along the way.
Target Use Cases
- Prettifying minified API responses
- Validating JSON syntax errors
- Minifying payloads for production
- Restructuring complex nested data
Strict validation with inline error highlighting: paste broken JSON and see exactly which token caused the failure.
⚡ Off-thread · UI stays at 60fps
Raw Input
1 lines
JSON Output
Size: 0.0 KBLines: 0
Parsed in 0ms