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All processing happens locally in your browser • Max 50MB
- Secure & Private
- Local Processing
- Never stored
Technical Specifications
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Powerful Features
Instant Validation
We parse your JSON in real-time to find missing commas, brackets, or quotes instantly.
Beautify & Minify
Convert ugly one-liners into readable code, or compress it to save space.
Error Highlighting
Don't guess where the error is. We point to the exact line number and character.
100% Private
Your data never leaves your browser. Safe for validating config files and API responses.
Why Use Our JSON Validator?
Client-Side Only
We use JavaScript's native JSON engine. Your API keys and sensitive data are safe.
Format Controls
Choose between 2-space or 4-space indentation for your preferred style.
File Support
Validate large config files directly from your computer.
Zero Latency
No server round-trips means instant feedback, even for large datasets.
JSON Pro Tips
Check Trailing Commas
The #1 cause of JSON errors is a comma after the last item in a list.
Use Double Quotes
Ensure all keys and string values use "double quotes", not 'single quotes'.
Validate Configs
Always validate usage of VS Code settings and package.json files.
Minify to Save Space
Removing whitespace can reduce payload size by up to 30%.