JSON Formatter & Validator
Beautify, validate, and minify JSON data instantly. Free, no signup required.
What is JSON Formatter?
JSON Formatter is a free online tool that helps developers beautify, validate, and minify JSON (JavaScript Object Notation) data. Whether you're debugging API responses, formatting configuration files, or validating data structures, this tool makes working with JSON effortless.
JSON is the most widely used data interchange format on the web. APIs, configuration files, and databases all use JSON. Having a reliable formatter and validator is essential for any developer's toolkit.
How to Use JSON Formatter
- Paste your JSON data into the input field
- Click "Format / Beautify" to add proper indentation
- Use "Minify" to compress JSON for production
- Click "Validate" to check for syntax errors
- Copy the formatted output with one click
Features & Benefits
- Instant Formatting: Beautify JSON with proper indentation in one click
- Syntax Validation: Detect and locate JSON errors with helpful messages
- Minification: Compress JSON by removing whitespace for production
- Customizable Indentation: Choose 2 spaces, 4 spaces, or tabs
- Privacy First: All processing happens in your browser - no data sent to servers
- Free Forever: No signup, no limits, no hidden costs
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse and generate.
Is my data secure?
Yes! All JSON processing happens entirely in your browser. Your data never leaves your computer or gets sent to any server.
What's the difference between format and minify?
Format/beautify adds indentation and line breaks for readability. Minify removes all unnecessary whitespace to reduce file size for production use.
Can it handle large JSON files?
Yes, the tool can handle JSON files up to several megabytes. For very large files, processing may take a moment.
What JSON errors can it detect?
It detects missing brackets, invalid quotes, trailing commas, incorrect data types, and other common JSON syntax errors.