API Tester & URL Editor is a robust add-on for Chrome designed for developers needing efficient API testing and URL manipulation. This tool supports all HTTP methods including GET, POST, PUT, DELETE, and PATCH, allowing users to create custom headers and request bodies in various formats like JSON and Form Data. The response viewer offers formatted output in a full tab, complete with color-coded success indicators and response timing, enhancing the testing experience. Users can easily copy headers and request bodies with one click, and the tabbed response interface provides organized views of body, headers, and raw data.

The URL editing features allow for smart, real-time URL construction with drag-and-drop functionality for path segments. Users have control over all URL components, including protocol and host, with quick suggestions for recently used segments. The tool prioritizes user privacy with 100% local storage and no data collection. With its modern UI and additional features like URL history and timestamp conversion, API Tester & URL Editor streamlines the API testing workflow, making it an essential tool for developers, QA engineers, and technical writers.