JSON Formatter/Validator
NewFormat, minify, and validate JSON instantly
How to Use JSON Formatter/Validator
- 1Select mode: Format, Minify, or Validate
- 2Paste your JSON into the input field (or use a quick sample)
- 3For formatting, choose indentation size (2, 4, or 8 spaces)
- 4Toggle auto-format on/off based on your preference
- 5View formatted output or validation result
- 6Copy the result using the copy button
- 7Review error messages with line/column numbers if validation fails
Features
- ✓Format JSON with customizable indentation (2, 4, or 8 spaces)
- ✓Minify JSON to reduce file size for network transmission
- ✓Validate JSON syntax with detailed error messages
- ✓Auto-format as you type with toggle option
- ✓Quick samples for common JSON structures
- ✓Error detection with line and column numbers
- ✓Common JSON error explanations and fixes
- ✓Copy formatted/minified JSON with one click
Frequently Asked Questions
What is JSON formatting?▼
JSON formatting adds proper indentation and line breaks to make JSON data human-readable and easier to debug.
Why minify JSON?▼
Minified JSON removes all unnecessary whitespace, reducing file size for faster network transmission and API responses.
What are common JSON errors?▼
Common errors include missing/extra commas, unquoted property names, trailing commas, single quotes instead of double quotes, and unescaped special characters.
Does this tool support JSON5 or other JSON variants?▼
This tool supports standard JSON (RFC 8259). JSON5 features like comments, trailing commas, and unquoted keys are not supported.
