JSON Formatter with Auto-Fix
The most advanced JSON formatter with intelligent error detection, auto-fix suggestions, and line-by-line debugging. Format, validate, and minify JSON instantly.
Auto-Fix
Smart suggestions to fix JSON errors automatically
Real-time Validation
See errors as you type with precise line numbers
Line Numbers
Professional editor with syntax highlighting
Privacy First
All processing happens in your browser
Format, validate, and minify your JSON data with auto-fix
Why Choose Our JSON Formatter?
Built by developers, for developers. We understand the pain points of working with JSON and created the most comprehensive solution available.
Our AI-powered error detection doesn't just find problems—it suggests specific fixes with confidence scoring so you know which suggestions to trust.
- • Remove trailing commas
- • Fix unquoted object keys
- • Convert single to double quotes
- • Add missing brackets/braces
Line numbers, syntax highlighting, error highlighting, and jump-to-error functionality. Everything you need for professional JSON editing.
- • Line-by-line error detection
- • Contextual error messages
- • Keyboard shortcuts
- • Real-time validation
Format, validate, minify, and analyze your JSON with detailed statistics and compression ratios. Perfect for API development and debugging.
- • JSON minification with size reduction
- • File upload and download
- • Copy to clipboard
- • Detailed JSON statistics
Perfect for Every Developer
Whether you're debugging APIs, validating config files, or learning JSON, our formatter adapts to your workflow.
API Development
Debug API responses, validate request payloads, and format JSON for documentation.
Configuration Files
Validate and format config files for applications, ensuring proper syntax.
Learning & Teaching
Perfect for students learning JSON syntax with helpful error explanations.
Code Reviews
Ensure JSON files are properly formatted before committing to version control.
Trusted by Developers Worldwide
Ready to Format JSON Like a Pro?
Join thousands of developers who trust our JSON formatter for their daily workflow. No signup required, completely free.