prettysales.nl Email Addresses and Contacts - KazanSEO

The website appears to be about web performance and optimization. It mentions functions and variables related to measuring and improving performance, including the "performance" object in the browser's window object. The code snippets suggest that the site provides guidance on using certain libraries or tools for performance testing and management. Additionally, there are references to handling errors, working with images, detecting browser compatibility, and using promises for asynchronous operations. Overall, it seems like a technical website focusing on optimizing web applications' speed and efficiency.