Paste your JSON below. Get instant formatting, syntax highlighting and validation. Everything runs in your browser.
A JSON formatter takes raw or compressed JSON data and transforms it into a clean, readable structure with proper indentation. This makes it much easier to read, debug and share JSON data with your team. Our tool also validates your JSON and catches syntax errors instantly.
Simply paste your JSON into the text area above and click "Format & Validate." The tool will parse your data, check for errors, and display a beautifully formatted version with color coded syntax highlighting. You can also minify your JSON to reduce file size, or copy the output with one click.
This free JSON formatter includes syntax highlighting with distinct colors for keys, strings, numbers, booleans and null values. It calculates statistics about your JSON structure including object count, array count, total keys and maximum nesting depth. All processing happens entirely in your browser, so your data never leaves your device.
Trailing commas after the last item in an object or array. Missing or extra brackets and braces. Unquoted keys or single quoted strings. Invalid escape sequences. Unexpected tokens and malformed values. The error messages include position information to help you find and fix problems quickly.