JSON Formatter & Validator
Format, validate, minify, and analyze JSON instantly.
Your JSON is processed locally in your browser.
Valid JSON
0 chars1 lines
Awaiting JSON input...
How to use this tool
1
Input JSON
Paste your raw JSON data into the editor or upload a .json file directly.
2
Format and Validate
Click Format to beautify the JSON, or view any syntax errors highlighted instantly.
3
Analyze and Export
Explore the JSON structure via Tree View, see data statistics, or export TypeScript interfaces.
Frequently Asked Questions
Everything you need to know about using our free web tools.
Yes, absolutely. The JSON parsing, formatting, and validation happen entirely within your browser. No data is sent to our servers.
The tool is highly optimized and can handle JSON files up to a few megabytes without noticeable lag. For files over 5MB, we recommend using dedicated desktop software.
We use native browser JSON parsing. If your JSON contains a syntax error (like a missing comma or unquoted string), the tool will catch it and display the exact line and character position of the error.