输入
输出

About JSON Formatter

A free online JSON formatter supporting format, compress, validate, and escape/unescape. Quickly turn messy JSON into readable structure, or compress JSON to reduce size. Custom indent size (2/4/8 spaces or Tab) and key sorting. All processing runs locally in your browser—your data is never uploaded.

Format
Beautify JSON
Compress
Minify JSON
Validate
Syntax check
Local Processing
No upload
Format, compress, validate, escape and unescape JSON
Custom indent size (2/4/8 spaces or Tab)
Sort keys for standardized output
All processing runs locally in your browser

How to Use

1
Input JSON
Paste your JSON data into the input box.
2
Choose Mode
Select format, compress, escape or unescape.
3
Adjust Options
Set indent size and key sorting as needed.
4
Copy Result
Copy or download the processed result.

Use Cases

API Debugging
Inspect API response data quickly.
Config Files
Format configuration files for readability.
Error Checking
Find missing commas or brackets.
Data Cleanup
Organize messy JSON data.

JSON Tips

Valid Syntax
JSON requires double quotes for strings and keys. Single quotes will cause parse errors.
Indent Choice
2 spaces is common for modern code; 4 spaces improves readability for nested data.
Compress vs Format
Compress reduces size for transmission; format improves readability for debugging.

Format Your JSON Now

From API debugging to config files, one-stop solution for your JSON processing needs.

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