JSON Formatter & Validator
Format, validate, and beautify JSON instantly. Paste, upload, or fetch from URL.
Drop JSON file or browse
Max 10MB
Formatted JSON will appear here...
Characters: 0 Lines: 0 Keys: 0 Depth: 0 Size: 0 B
Invalid JSON
How to use
- Paste your JSON into the input area, or drag-and-drop a JSON file
- Choose your formatting options (indent size, sort keys)
- Click Format to beautify or Minify to compact
- Copy or download the result
FAQ
Is it safe to paste JSON here?
Yes. All processing happens in your browser. Your data never leaves your device or touches our servers.
What's the difference between format and minify?
Format adds indentation and line breaks to make JSON readable. Minify removes all whitespace to reduce file size.
How large a file can I format?
Files up to 10MB are supported. Very large files may take a moment to process.