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JSON Editor

Powerful in-browser JSON editor with formatting, validation, linting, folding, and visualization. Paste your JSON and start editing instantly.

  • Format JSON with customizable indentation (2/4 spaces or tabs)
  • Validate JSON syntax with instant error highlighting
  • Minify JSON for production use
  • Sort keys alphabetically
  • Line numbers and code folding
  • 100% client-side processing for privacy
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FAQ

Is my data sent to a server?
No, all processing happens locally in your browser. Your JSON data never leaves your device.
What is the maximum file size?
You can paste up to 10MB of JSON data. For larger files, we recommend using our desktop applications.
Does it support large JSON files?
Yes, the editor is optimized for large JSON files. It uses streaming techniques to handle files even when memory is limited.
Can I use keyboard shortcuts?
Yes! Ctrl/Cmd+S to save, Ctrl/Cmd+Shift+F to format, and Ctrl/Cmd+Shift+M to minify.