About JSON Formatter
JSON (JavaScript Object Notation) is the standard format for data exchange on the web today. However, minified JSON returned by APIs is often impossible for humans to read. Our JSON Formatter tool helps you instantly convert cramped, unreadable JSON into a beautiful, indented structure with syntax highlighting.
Key Features
- Prettify JSON: Convert raw JSON strings into a readable, tree-like structure.
- Validate JSON: Automatically detects syntax errors (like missing commas or unclosed brackets) and points out the exact line number.
- Minify JSON: Remove all whitespace and newlines to generate a compact version for production use.
- Secure & Private: All formatting happens on your device. We never upload your JSON data to any server.
- Smart Stats: See the number of top-level keys, the nesting depth of your object, and the total file size in real-time.
Frequently Asked Questions
No. This tool runs entirely in your browser using JavaScript. Your data stays on your machine, making it safe for processing sensitive or private configuration files.
The JSON format is very strict. Common errors include using single quotes (JSON requires double quotes), trailing commas at the end of a list, or missing curly braces. Our validator will highlight the line to help you fix it.
Prettifying adds spaces, tabs, and newlines to make the data readable for developers. Minifying removes all unnecessary space to reduce the data size, which helps in optimizing web application performance.