Анотація: (English) The article systematizes open approaches to balancing the visual complexity of interfaces with website performance in terms of Core Web Vitals metrics. It explains how the complexity of the visual layer, including media, fonts, animations, and DOM depth, increases the cost of critical rendering and affects LCP (Largest Contentful Paint), INP (First Input Delay), and CLS (Cumulative Layout Shift). A framework model based on the "perceptual value ↔ computational cost" axis and a taxonomy of strategies for optimizing website performance are proposed. These strategies include adaptive media and font delivery, prioritizing uploads, JS fragmentation and postponement, controlling content visibility, RSC architectures, and other operational optimizations. Evaluation methods (CrUX/RUM, Lighthouse, Element Timing, LCP API, Long Animation Frames), as well as threshold considerations for implementing them in CI/CD, are described. This material is intended for developers and UX performance researchers.