Front end performance tip

This document provides tips for optimizing front-end performance. It discusses optimizing assets like images, CSS, and JavaScript to reduce file sizes and load times. Specific techniques include image sprites, CSS combining, lazy loading images, and minimizing DOM access. It also covers optimizing the rendering process by prioritizing visible content, avoiding layout thrashing, and deferring non-critical scripts. The document emphasizes the importance of front-end performance and provides references for further reading on the topic.