Free Online JSON Formatter & Validator
Free online tool to beautify, minify and validate JSON code with syntax error detection.
Initializing Module
Optimizing assets and preparing high-fidelity workspace...
How to use it
Paste JSON
Paste your raw JSON string into the left editor area.
Format or Minify
Click 'Beautify' to make it readable or 'Minify' to compress it into a single line.
Check Errors
If the JSON is invalid, the tool will highlight the exact syntax error for you to fix.
FAQ
?Is my JSON data secure?
Yes, all processing happens locally in your browser. Your data is never sent to any server.
?Can I use this for large JSON files?
Yes, the tool is optimized for performance and can handle standard large JSON objects without slowing down.
?Does it support minification?
Absolutely. One click on the 'Minify' button will remove all white spaces and line breaks.
Need a custom tool?
We're constantly adding new tools. Suggest one or report a bug.
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Your data never leaves your browser
Make your JSON data readable and valid with our free JSON Formatter. It supports instant beautification with custom spacing, minification for smaller payloads, and real-time validation that highlights syntax errors and line numbers.