What is API Response Formatter?
API Response Formatter is a free online tool that formats, beautifies, and validates API responses from REST APIs, GraphQL endpoints, and other web services. It supports JSON, XML, and other common API response formats.
Built with modern web technologies, this tool operates entirely in your browser, ensuring your API response data remains private and secure with client-side processing. No data is sent to any server.
Why Use API Response Formatter?
This tool eliminates the need for browser extensions or IDE plugins. Access professional-grade API response formatting directly in your browser with instant results and syntax highlighting.
Perfect for developers testing REST APIs, debugging API responses, validating JSON/XML structures, and improving readability of minified or compressed API responses.
Common Use Cases
API Development & Testing: Format and validate API responses during development, testing, and debugging workflows.
Response Validation: Quickly validate JSON/XML structure, identify syntax errors, and verify response format.
Documentation: Beautify API responses for documentation, presentations, or sharing with team members.
Debugging: Make compressed or minified API responses readable to troubleshoot issues quickly.
How to Use API Response Formatter
Paste your API response (JSON, XML, etc.) into the input field. The formatter will automatically detect the format and beautify it with proper indentation and syntax highlighting.
Use options to adjust indentation size, validate syntax, minify responses, or export formatted output. Results update in real-time with immediate feedback.