Dev API Tester PRO is a Chrome extension designed for developers needing a fast and efficient way to test REST APIs without the complications of CORS issues. This tool supports various HTTP requests including GET, POST, PUT, PATCH, and DELETE, providing instant JSON response visualizations. The free version includes essential features like native CORS bypass, response time tracking, and support for custom headers and bearer tokens, making it a versatile choice for both front-end and back-end developers.

The PRO version enhances functionality with unlimited collections for organizing project routes, an expanded history of the last 100 requests, and a code snippet generator for easy exportation of requests in JavaScript or cURL format. Additionally, it offers a JSON beautifier to format request bodies effortlessly. With a one-time payment and no monthly subscriptions, this tool operates offline, ensuring a seamless testing experience.