JSON Formatter & Validator

Paste JSON here

Free online JSON formatter, validator, and beautifier. Pretty print, minify, and validate JSON instantly. Perfect for developers working with APIs, configs, and data.

How to Use

How to Use the JSON Formatter

Step 1: Paste JSON

Paste your JSON data into the input field. It can be minified, unformatted, or messy.

Step 2: Format or Validate

Click Format to pretty-print with indentation, Minify to compress, or Validate to check syntax.

Step 3: Copy and Use

Copy the formatted, minified, or validated JSON to use in your projects, APIs, or config files.

Key Features

Pretty print with indentation
Minify to single line
JSON syntax validation
Error highlighting
One-click copy
100% free, no limits

Common Uses

Debugging API responses
Reading minified JSON files
Validating config files
Preparing JSON for documentation

FAQ

Q: Why is my JSON invalid?
A: Common issues include trailing commas, missing quotes around keys, single quotes, or comments. This tool highlights the exact error position.

Q: What indentation does it use?
A: 2-space indentation for clean, readable output.

Q: Can it handle large JSON files?
A: Yes, but very large files (>10MB) may be slow. For production, use command-line tools like jq.