{ } JSON Formatter
Beautify, minify, validate, and fix JSON instantly
How to Format JSON Online
- Paste your JSON — Copy from API responses, config files, or anywhere
- Click "Format" — Adds proper indentation for easy reading
- Validate — Check for syntax errors with detailed messages
- Fix — Auto-repair common errors like trailing commas
- Minify — Compress for smaller file size in production
JSON Formatting Features
✨ Format / Beautify
Adds proper indentation (2 spaces) and line breaks, making nested structures easy to read and debug.
📦 Minify
Removes all whitespace to reduce file size—perfect for APIs and production deployments.
✓ Validate
Checks JSON syntax and shows exactly where errors occur with helpful error messages.
🔧 Fix
Auto-repairs common issues: trailing commas, single quotes, unquoted keys, undefined values.
Frequently Asked Questions
How do I format JSON online?
Paste your JSON and click "Format". The tool adds proper indentation and line breaks for easy reading.
What does minify JSON mean?
Minifying removes all whitespace, reducing file size. This is useful for APIs where smaller payloads improve performance.
Can this tool fix invalid JSON?
Yes! Click "Fix" to repair common errors like trailing commas, single quotes, and unquoted keys.
Is my JSON data private?
Absolutely. All processing happens locally in your browser. Your data never leaves your device.
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🔒 100% Private & Secure
All JSON processing happens locally in your browser—your data is never uploaded. Safe for API keys, configs, and sensitive data.