🔧 JSON Formatter
Format, validate, minify, and beautify JSON — free, in your browser.
📥 Input JSON
⚙️ Actions
📤 Output
JSON Formatter: Format, validate, and beautify JSON
JSON Formatter lets you format, validate, and beautify json. Upload JSON text and get formatted JSON — all processed locally in your browser, with no uploads and no sign-up.
Pretty-print minified JSON
Pretty-print minified JSON. This is one of the most common reasons people reach for JSON Formatter — and it handles the job in seconds, entirely in your browser.
Validate JSON syntax errors
Validate JSON syntax errors. This is one of the most common reasons people reach for JSON Formatter — and it handles the job in seconds, entirely in your browser.
Beautify API responses for reading
Beautify API responses for reading. This is one of the most common reasons people reach for JSON Formatter — and it handles the job in seconds, entirely in your browser.
Everything You Need in a JSON Formatter
Powerful features that make JSON Formatter fast, private, and free.
Instant Processing
Conversion and validation happen as you type.
Developer-Grade
Built for accurate, standards-compliant results.
100% Private
All processing is local — no data is sent anywhere.
Copy & Export
One-click copy to clipboard for quick use.
Free Forever
No sign-up, no API keys, no limits.
Regex & JSON Support
Full regular expression and JSON validation built in.
How to Use
Paste JSON
Paste your JSON into the input area.
Choose Action
Click Format, Minify, or Validate.
View Result
Output appears with status indicator.
Copy
Click Copy to copy the result.
Detailed User Guide
Paste JSON
Paste your JSON into the input area.
Choose Action
Click Format, Minify, or Validate.
View Result
Output appears with status indicator.
Copy
Click Copy to copy the result.