What is JSON formatting?

JSON formatting (or beautifying) adds proper indentation, line breaks, and spacing to make JSON data more readable and easier to understand.

How do I validate JSON syntax?

Our JSON validator automatically checks your JSON syntax for errors and displays clear error messages with line numbers to help you fix any issues.

Yes, you can minify JSON by removing all unnecessary whitespace and formatting to create the smallest possible file size for production use.

Yes, this JSON formatter and validator is completely free to use with no subscriptions, registrations, or hidden fees required.

Your JSON data is stored locally in your browser for convenience, but never sent to our servers, ensuring your data privacy and security.

Beautiful color-coded JSON display with proper syntax highlighting for strings, numbers, booleans, and null values.

Comprehensive JSON validation pinpointing the exact line and column of any error, with a highlighted code snippet for easy debugging.

Alphabetically sort object keys, escape JSON into a string literal, or unescape an encoded JSON string — all in one click.

Complete analysis including file size, line count, object count, array count, and property count for your JSON data.

Choose between different indentation options (2 spaces, 4 spaces, or tabs) to match your coding standards.

Automatically saves your work locally in your browser, so you never lose your progress between sessions.

Fully responsive design that works perfectly on desktop computers, tablets, and mobile phones.

Paste your JSON — Copy and paste raw JSON data into the input panel on the left.
Choose an action — Click "Format & Beautify" to pretty-print, "Validate Only" to check syntax, or "Minify" to compress.
Set indentation — Use the Indent dropdown to choose 2 spaces, 4 spaces, or tabs.
Review the output — The right panel shows syntax-highlighted results with statistics like byte size and property counts.
Copy or download — Hover over a panel to copy, or click "Download JSON" to save the file.

How do I make minified JSON readable? Paste compressed JSON and click "Format & Beautify" to add proper indentation and line breaks instantly.
How do I find syntax errors in my JSON? Click "Validate Only" to get detailed error messages with line numbers pointing to the exact problem.
How do I reduce JSON file size for an API response? Paste your formatted JSON and click "Minify" to strip all whitespace and produce the smallest possible output.