JSON Formatter – Free Online JSON Beautifier & Validator
[qt_json_formatter]
JSON Formatter
Format, validate, minify and tree-view your JSON data. Paste your messy JSON and get clean, readable output instantly.
About This Tool
The JSON Formatter is a free online tool for developers. Paste any JSON string and instantly beautify it with proper indentation, validate it for syntax errors, or minify it for production use. All processing happens in your browser — no data is sent to any server.
Features
- Format / Beautify — Add indentation and line breaks for readability
- Minify / Compact — Remove whitespace for smaller file size
- Validate — Check if your JSON is syntactically correct with error details
- Privacy First — All processing is done locally in your browser
How to Use
- Paste your JSON into the input area
- Click "Format" to beautify, "Minify" to compact, or "Validate" to check syntax
- Copy the result with the Copy button