JSON Formatter & Validator
Beautify your JSON code, fix syntax errors, and minify data for production. A free, secure tool for developers.
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Input JSON
Formatted Output
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Why use a JSON Formatter?
JSON (JavaScript Object Notation) is the language of the web. However, APIs often return JSON in a “minified” format (single line) to save bandwidth, which makes it impossible for humans to read.
Tool Features
- Beautify: Adds indentation and newlines to make the data readable.
- Validate: Checks for common errors like missing commas or unclosed brackets.
- Minify: Removes all whitespace to reduce file size for production use.
Common JSON Errors
If you get an error message, check for these common mistakes:
- Trailing Commas: JSON does not allow a comma after the last item in a list `[1, 2,]`.
- Single Quotes: JSON strings must use double quotes `”key”`, not single quotes `’key’`.
- Unquoted Keys: All keys must be wrapped in quotes `{“id”: 1}`, not `{id: 1}`.