How to optimize AMP performance?

Optimizing Accelerated Mobile Pages (AMP) performance involves several strategies to ensure fast loading times and a smooth user experience. Here are some key techniques:

1. Minimize CSS and JavaScript: Use only essential CSS and JavaScript. For CSS, consider using inline styles for critical paths to render above-the-fold content as quickly as possible. For JavaScript, limit the use of external scripts.

   Example: Instead of linking to an external CSS file, include critical styles directly within the <style amp-custom> tag in your AMP HTML.

2. Image Optimization: Use the amp-img tag and specify the width and height attributes to avoid layout shifts. Also, use responsive images with the srcset attribute to serve appropriately sized images based on the user's device.

   Example: <amp-img src="image.jpg" width="300" height="200" layout="responsive"></amp-img>

3. Leverage AMP Cache: Utilize the AMP Cache to serve your pages faster. When a user requests an AMP page, the request is first checked against the cache, and if available, the cached version is served.

   Example: Ensure your AMP pages are properly configured with the necessary cache headers to take advantage of the AMP Cache.

4. Reduce HTTP Requests: Minimize the number of HTTP requests by combining files and using CSS sprites for icons.

   Example: Instead of loading multiple small images, combine them into a single sprite image and use CSS to display only the necessary parts.

5. Use AMP Components Wisely: Use AMP components that are optimized for performance. For example, use amp-bind for state management instead of JavaScript.

   Example: Use amp-bind to handle user interactions without loading external scripts.

6. Preload Key Resources: Use the <link rel="preload"> tag to preload key resources that are critical for the initial render.

   Example: <link rel="preload" as="script" href="critical.js">

7. Optimize Server Response Time: Ensure your server responds quickly to requests. Use a content delivery network (CDN) to serve your content from servers closer to the user.

   Example: Consider using Tencent Cloud's CDN service to improve the delivery speed of your AMP pages.

By implementing these strategies, you can significantly enhance the performance of your AMP pages, leading to better user engagement and satisfaction.