JSON Formatter & Validator
Format, minify, and validate JSON locally in your browser.
Input
Sponsored
How it works
How it works
This tool parses your input with JSON.parse. On success, it pretty‑prints or minifies using JSON.stringify.
- Parsing errors (unexpected token, trailing commas) are caught and reported.
- No schema validation is performed; only syntactic JSON is checked.
- Numbers are IEEE‑754; very large integers may be rounded.
Privacy & Security
All processing is local.
Accuracy, Limits & Tips
Large JSON may be slow in the browser; no schema validation.
Examples
- Pretty-print API responses.
Looking for broader guides and best practices? Visit the ToolsAreUs Blog for indexes (like the full tool list) and articles (e.g. secure password generation).