JSON Formatter & Validator
An essential tool for developers. Paste your raw, unorganized JSON code to format it with perfect indentation (beautify), minify it to save space, or spot syntax errors with our instant validator.
Strict Validation
Unlike other tools, our validator points out the exact error location (e.g., missing quotes, missing commas, or invalid format), allowing you to fix your JSON without wasting time.
100% Secure Local Processing
We know you handle sensitive API payloads and private keys. This tool runs entirely in your browser — no data is ever sent to external servers.
How to use the tool
Paste your JSON into the text area. Use the Format button to make it clean and readable, or Minify to compact it into a single line. If there is an error, the validator points to the exact line so you can fix it. Then just copy the finished result.
Frequently asked questions
What is the difference between Format and Minify?
Format (Beautify) adds spaces and line breaks for human readability. Minify removes all spaces to shrink the file size (useful for production).
Is there a size limit for the JSON payload?
No. Because it runs locally on your machine, the tool handles massive JSON payloads without any upload limits.
Is my data secure?
Absolutely. The processing happens entirely in your browser. You can even disconnect your internet and the tool will still work.
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