JSON Formatter & Validator
Paste messy JSON, get it pretty-printed with proper indentation. Validates syntax and shows exact error locations. Browser-only, no signup.
JSON Formatter
Format, validate and minify JSON
How to use this tool
1. Enter your input. Use the form above — all processing happens in your browser, no data is sent to any server.
2. View the result. The output appears instantly below the input. Copy any value with one click.
3. Explore related tools. See the related tools section below for adjacent calculators and converters.
4. Bookmark this page. This tool runs entirely client-side, so it works offline once loaded. Add it to your bookmarks for quick access.
Frequently Asked Questions
Everything you need to know about this currency pair
Paste your JSON into the input field above and click 'Format'. The tool parses your JSON, validates it, and outputs a properly indented version with consistent 2-space indentation. Any syntax errors (missing commas, unbalanced braces, trailing commas) are highlighted with the line number.