Formatters & GeneratorsDocumentation
JSON Formatter — Documentation
Format, validate, and minify JSON payloads with syntax highlighting and errors.
Overview
JSON Formatter is a free online tool that lets you format, validate, and minify json payloads with syntax highlighting and errors. All processing happens right in your browser — your files never leave your device.
No cost
Free
Client-side
Privacy
Not required
Signup
Quick Start
1
Paste JSON to auto-format with syntax highlighting.
2
Toggle between pretty-print and minified output.
Tips & Best Practices
Errors are highlighted inline to help you spot issues fast.
Use minify mode for production-ready compact JSON.
Frequently Asked Questions
4 questionsReady to get started?
Open JSON Formatter