đ JSON Formatter â Beautify & Validate JSON Instantly
Paste raw JSON and instantly get clean, indented, readable output with syntax highlighting â fully validated in your browser. Free & private.
Formatted Output
How to Use the JSON Formatter
- Paste Your JSON â Copy raw or minified JSON and paste it into the input box.
- Choose Indent Size â Select 2 spaces, 4 spaces, or tab indentation.
- Click Format JSON â The tool validates and formats the JSON.
- Review the Output â Inspect the colour-highlighted JSON.
- Copy to Clipboard â Click Copy to grab the formatted JSON.
Key Features
Live Validation
Detects syntax errors instantly before formatting.
Syntax Highlighting
Colour-coded keys, strings, numbers, booleans, null.
Minify Option
Strip whitespace for compact output.
100% Private
All processing happens in your browser.
JSON Stats
See size, lines, and key count.
One-Click Copy
Copy formatted output instantly.
Frequently Asked Questions
Is this tool free to use?
Yes, completely free with no registration required.
What is JSON formatting?
Adds proper indentation and line breaks to compact JSON, making it human-readable.
Does this tool validate JSON?
Yes, it checks for syntax errors and displays a clear message if invalid.
Is my JSON data sent to a server?
No. All formatting happens in your browser. Your data never leaves your device.
What causes a JSON parse error?
Common causes: trailing commas, missing quotes, single quotes instead of double quotes.