JSON Formatter & Validator
Instantly format, validate, and minify JSON — directly in your browser. No data is sent to any server.
How to Use the JSON Formatter
Paste Your JSON
Paste raw, minified, or messy JSON into the Input panel on the left. You can also load a sample to try it out.
Format or Minify
Click Format to prettify with indentation, or Minify to compact it into a single line.
Validate & Explore
Click Validate to check for errors. Switch to Tree view to explore nested structures interactively.
Copy or Download
Copy the result to clipboard or download it as a .json file — ready to use anywhere.
About this Tool
100% Private
All processing happens locally in your browser. Your JSON data is never uploaded to any server — completely safe for sensitive or private data.
Instant Results
Formatting, validation and minification happen in real time with no loading delays. Works even without an internet connection after the page loads.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write and easy for machines to parse and generate.