JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
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Format, validate, and beautify JSON data with syntax highlighting.
Immediately identify syntax errors with precise line and position.
Color-coded display makes JSON structure easy to understand.
Switch between readable and compact formats with one click.
Handle large JSON files that crash other online formatters.
JSON is the dominant data format for web APIs, configuration files, and data storage. Developers work with JSON daily and need tools to quickly format, validate, and debug it.
Properly formatted JSON is crucial for debugging API responses, editing configuration files, and communicating data structures between team members.
JSON does not allow trailing commas after the last item in arrays or objects, unlike JavaScript.
JSON requires double quotes for strings. Single quotes are not valid JSON.
All keys in JSON must be quoted strings. Unquoted keys are valid in JavaScript but not in JSON.
Standard JSON does not support comments. Use JSONC or JSON5 formats if comments are needed.
JSON (JavaScript Object Notation) is a lightweight data interchange format. It is easy for humans to read and write, and easy for machines to parse and generate.
Formatting adds indentation and line breaks to make JSON readable. Minified JSON removes whitespace for smaller file size. Both represent the same data.
Paste your JSON and the tool will automatically check for syntax errors like missing commas, brackets, or quotes, highlighting exactly where the error occurs.
JSON is more compact and easier to read than XML. JSON uses key-value pairs while XML uses tags. Most modern APIs prefer JSON over XML.
This tool focuses on formatting and validation. For conversion to CSV or other formats, use a dedicated converter.