JSON Minifier & Beautifier
Developer utilities: formatters, validators, encoders, and testers.
What does this tool do?
Compress JSON for production or pretty-print it for debugging. Paste any JSON to validate it, see exactly what is wrong if it fails, and switch between minified and beautified output with one click.
Key features
- Syntax validation
- Format & minify
- Error highlighting
- Copy formatted output
Compress JSON for production or pretty-print it for debugging. Paste any JSON to validate it, see exactly what is wrong if it fails, and switch between minified and beautified output with one click.
JSON Input
Output
How to Use
- Paste your JSON into the input box - it is validated automatically.
- Click Minify to compress it to a single line, or Beautify for readable 2-space indentation.
- Copy the result with one click.
Core Features
- Instant JSON validation with clear error messages
- One-click minify for production payloads
- One-click beautify with 2-space indentation for debugging
- Shows character counts before and after - 100% client-side
Frequently Asked Questions
Why did my JSON fail validation?
The most common causes are trailing commas, single quotes instead of double quotes, or unquoted keys. The error message points to the exact problem.
Is minified JSON still valid?
Yes. Minifying only removes unnecessary whitespace - the data is identical and parses exactly the same.
How to Use JSON Minifier & Beautifier
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