JSON Formatter
Beautify, validate, and minify JSON directly in your browser.
Key Terms (Click to expand)
Beautify
Formats valid JSON with line breaks and indentation for readability.
Minify
Removes extra whitespace from valid JSON for compact output.
Indentation
The number of spaces used per nesting level when beautifying JSON.
Parse error location
Syntax errors include line/column context when position data is available.
Tool
Methodology
The formatter uses native JSON parsing and deterministic stringify output:
- Beautify: parse JSON then stringify with selected indentation.
- Minify: parse JSON then stringify without extra whitespace.
- Input is processed locally in your browser.
- Syntax errors surface with line/column context when available.
Worked Example
A concrete example with realistic numbers will be added for this route.
Assumptions and Limitations
- Formatting requires syntactically valid JSON input.
- Key ordering follows JavaScript JSON serialization behavior.
- No server-side persistence is used for formatting input.
FAQ
Is my JSON uploaded to a server?
No. This formatter runs locally in your browser.
What is the difference between beautify and minify?
Beautify adds readable spacing, while minify removes non-essential whitespace.
Why do I see a syntax error line/column?
The parser reports where JSON became invalid so you can fix malformed input faster.