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JSON Formatter & Validator
Indent:
Free Online JSON Formatter & Validator
Paste any JSON to instantly beautify, minify, or validate it. This tool catches syntax errors like missing commas or unclosed brackets and points to exactly where they occur, while the tree view makes it easy to explore deeply nested objects and arrays. All parsing happens locally in your browser — nothing is sent to a server.
Common Uses for a JSON Formatter
- Debugging API responses by beautifying compact JSON output.
- Validating JSON before using it in configuration files.
- Minifying JSON for production to reduce payload size.
- Exploring large, deeply nested JSON structures with the tree viewer.
Frequently Asked Questions
Find answers to common questions about this tool, data privacy, and usage.
Paste your JSON into the input box and the tool automatically formats it with proper indentation, making it readable, or click minify to compress it into a single line.
