Online JSON Formatter
Format, validate and fix JSON. 100% free, private and offline-capable.
JSON Formatter Features
✨ Formatting & Validation
Format your JSON with perfect indentation and validate syntax in real-time. Instantly detects errors and shows exact location.
🗜️ Minification
Minify your JSON by removing unnecessary spaces to reduce file size. Perfect for production and optimization.
🔧 Escape/Unescape
Escape JSON strings for use in code or unescape to view original content. Useful for debugging and integration.
🔤 Key Sorting
Sort your JSON keys alphabetically for better organization and standardization. Makes comparisons and reviews easier.
📊 Detailed Statistics
View information like number of keys, characters, file size and depth. Analyze the structure of your data.
🔒 100% Secure & Offline
All processing is done locally in your browser. Your data never leaves your device. Works offline after loading.
How to Use the JSON Formatter
Paste your JSON
Paste or type your JSON code in the input area. Validation happens in real-time.
Choose the operation
Select between format, minify, escape, unescape or sort keys.
View the result
See the result in the "Result" tab with options to copy or download the file.
Frequently Asked Questions about JSON
What is JSON and what is it used for?
JSON (JavaScript Object Notation) is a lightweight data interchange format, widely used in REST APIs, configuration files, NoSQL databases and web development.
How do I validate if my JSON is correct?
Our tool offers real-time validation. Common errors include extra or missing commas, unclosed quotes, unbalanced braces and invalid values.
What's the difference between formatting and minifying JSON?
Formatting adds indentation and line breaks for easier reading. Minifying removes all spaces to reduce size. Use formatting for development and minification for production.
Is this online JSON formatter safe to use?
Yes, it's completely safe. All processing is done locally in your browser, your data never leaves your device and it works offline after loading.
Are there keyboard shortcuts available?
Yes! Use Ctrl+Enter (or Cmd+Enter on Mac) to format and Ctrl+M (or Cmd+M) to minify.