Online JSON Formatter & Validator
Paste JSON and it auto-formats instantly. Click nodes to expand/collapse. All processing happens in your browser - 100% private.
What is JSON Formatter?
A JSON formatter is a tool that helps you format, validate, and analyze JSON (JavaScript Object Notation) data. It makes it easier to read complex JSON structures, find errors, and optimize your data.
Whether you're working with APIs, configuration files, or data storage, our free JSON formatter helps you:
- Format and beautify JSON for better readability
- Validate JSON syntax instantly
- Minify JSON to reduce file size
- Identify and fix JSON errors quickly
How to Format JSON Online
- Paste your JSON: Copy and paste your JSON data into the input field
- Click Format: Click the "Format" button to beautify your JSON with proper indentation
- Review the output: Check the formatted result in the output field
- Copy or Download: Use the "Copy" button to copy formatted JSON to clipboard
Common JSON Errors
Missing Quotes
All keys must be in double quotes: {"name": "value"}
Trailing Comma
Don't use commas after the last item in arrays or objects
Single Quotes
JSON only accepts double quotes, not single quotes
Unescaped Characters
Special characters like quotes need to be escaped with backslash
Why Use Our Tailwind-based JSON Tool?
- ⚡Lightning Fast: Process large JSON files instantly with no lag
- 🔒100% Private: All processing happens locally in your browser. No data sent to servers.
- ✨Modern UI: Beautiful, responsive design built with Tailwind CSS
- 🚀No Sign-up: Use instantly without registration or login
Quick Tips
- 💡Use Format to make JSON readable
- 🔍Use Validate to check for errors
- 📦Use Minify to reduce file size
- ⏱️Works with large JSON files
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FAQ
Is it free?
Yes, completely free!
Is data saved?
No, everything stays in your browser.