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The website appears to be a collection of JavaScript code snippets. It seems to focus on various functions and methods related to browser window performance, timing, and measuring. The code also includes elements like error handling, image loading, polyfills for different browsers, and the use of promises. While it is difficult to determine the exact purpose or theme of the website based solely on these code snippets, it may serve as a resource for developers looking for solutions to specific JavaScript-related challenges.