JSON Formatter
Free, browser-based JSON formatter, validator, and TypeScript generator. 100% Client-Side and Privacy-First.
Capabilities
A structural architect for your data, turning messy, minified JSON into human-readable, logically organised structures with built-in validation.
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
100% Client-Side • Privacy-First — nothing leaves your browser.