JSON Formatter
Format, validate, and minify JSON data instantly. All processing happens in your browser.
How to Format JSON
- 1
Paste JSON Data
Paste your raw or minified JSON into the input field.
- 2
Click Format or Minify
Format adds indentation for readability. Minify removes whitespace for compactness.
- 3
Choose Indentation
Select 2 spaces, 4 spaces, or tab indentation for formatted output.
- 4
Copy Result
Click Copy to copy the formatted or minified JSON to your clipboard.
About JSON Formatting
JSON (JavaScript Object Notation) is the most widely used data interchange format in modern software development. Properly formatted JSON is essential for readability during development and debugging.
This tool validates, formats, and minifies JSON data instantly. The formatter adds consistent indentation and line breaks, making nested structures easy to read. The minifier removes all unnecessary whitespace, reducing JSON size for production use.
Invalid JSON is immediately detected with descriptive error messages pointing to the issue. This makes the tool valuable for debugging API responses, configuration files, and data exports.
Key Features
Common Use Cases
- •Format minified API responses for easier debugging
- •Validate JSON configuration files for syntax errors
- •Minify JSON data before storing in databases or APIs
- •Clean up messy JSON copied from different sources
- •Format JSON for documentation and technical writing
Frequently Asked Questions
What is the difference between Format and Minify?
Format adds indentation and line breaks for human readability. Minify removes all whitespace to create the smallest possible output, ideal for production data transfer.
Can this tool fix invalid JSON?
No. The tool validates and reports errors but cannot auto-fix them. It will show you the error location and message so you can fix it manually.
Is there a size limit for JSON input?
There is no hard limit. The tool handles JSON of any size, though very large documents (10MB+) may be slower to process depending on your device.
What indentation should I use?
2 spaces is the most common convention in JavaScript/TypeScript projects. 4 spaces is common in Python and Java projects. Tabs are preferred by some developers for accessibility (adjustable width).
Is my JSON data sent to any server?
No. All formatting and validation happens entirely in your browser. Your data never leaves your device.