JSON Formatter & Validator - Beautify & Minify Online | ToolsAid
Professional JSON Formatter. Beautify ugly JSON code, validate syntax, and minify for production. Privacy-focused, client-side tool with tree view and error highlighting.
key Features
- Instant JSON formatting (Beautify)
- Syntax validation with clear error reporting
- Minify JSON for smallest possible size
- Load sample data for quick testing
- 100% Client-Side (No server uploads)
The JSON Formatter & Validator is an essential tool for developers working with APIs and configuration files. Raw JSON often comes as a single long line, making it impossible to read.
Beautify: Our tool parses your JSON and re-formats it with proper indentation (2 or 4 spaces) so the structure becomes clear immediately.
Validate: Paste your code, and we'll instantly check for syntax errors. Forget about checking for missing commas manually; let the tool do the heavy lifting.
Privacy First: Like all ToolsAid utilities, processing happens in your browser. You can safely format sensitive API responses or config files without worrying about data leaks.
Frequently Asked Questions
Is my JSON data sent to a server?
No. This tool runs entirely in your browser using JavaScript. Your sensitive JSON data never leaves your device.
Can it handle large JSON files?
Yes, since it runs locally, it's limited only by your browser's memory. It handles megabytes of JSON data with ease.
What happens if my JSON is invalid?
The tool will show a red error message highlighting exactly where the syntax error is (e.g., missing comma, unclosed bracket).
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