JSON Formatter and Validator
JSON (JavaScript Object Notation) is the most common data format for APIs and configuration files. Our formatter takes messy, minified, or single-line JSON and formats it with proper indentation, making it easy to read and debug. It also validates the JSON structure and highlights any syntax errors.
Why Format JSON?
Minified JSON saves bandwidth but is nearly impossible to read. Formatted JSON with proper indentation reveals the data structure clearly, making it easier to find specific values, spot errors, and understand API responses. This is essential for developers working with REST APIs, configuration files, and data analysis.
Frequently Asked Questions
What makes JSON invalid? ▼
Common errors include missing commas, unmatched brackets, single quotes instead of double quotes, trailing commas, and unquoted keys.
Can this tool handle large JSON files? ▼
The tool works well with JSON up to several megabytes. Extremely large files may cause your browser to slow down.