JSON Formatter
Paste or upload your JSON, get beautifully formatted output with syntax highlighting. Validates JSON and shows line-number errors.
Drag & drop your JSON here
or click to browse · JSON files up to 10 MB
Formatted Output
What is JSON to Formatted JSON Conversion?
JSON formatting beautifies minified JSON with proper indentation and syntax highlighting. FreeCVT formats entirely in your browser.
Understanding the Formats
JSON Format
JSON is a lightweight data interchange format that can be minified or formatted.
Formatted JSON Format
Formatted JSON has consistent indentation and line breaks for readability.
When to Use This Converter
- Read minified JSON from APIs
- Debug JSON data structures
- Prepare JSON for documentation
Limitations
- Invalid JSON will show parsing errors with line numbers
- Very large files may be slow to format
- Deep nesting may hit recursion limits
Why Freecvt?
100% Private
Your data is processed in your browser. Nothing is uploaded to any server.
Syntax Highlighting
Beautiful color-coded output makes your JSON easy to read and understand.
Validates JSON
Instantly validates your JSON and shows exact line numbers for errors.
Frequently Asked Questions
Can it fix invalid JSON?
It shows the exact error location but cannot auto-fix structural errors.
What indent size should I use?
2 spaces is standard. 4 spaces is more readable.
Does it sort keys?
Optional key sorting can be enabled.
Is my data uploaded?
No. Everything happens in your browser.