What are some effective techniques for optimizing Lighthouse scores?

What are some effective techniques for optimizing Lighthouse scores?

To optimize your Lighthouse scores, focus on improving performance, accessibility, best practices, and SEO. Here are some techniques:

1. Minimize JavaScript and CSS files.
2. Optimize images and use modern formats like WebP.
3. Implement lazy loading for images and videos.
4. Use a Content Delivery Network (CDN).
5. Ensure your server responds quickly.

Can you explain how to minimize JavaScript and CSS files?

Certainly! You can minimize JavaScript and CSS files by using tools like UglifyJS for JavaScript and CSSNano for CSS. These tools remove unnecessary characters, comments, and whitespace, reducing file size. Additionally, consider combining multiple files into one to reduce HTTP requests.

What is lazy loading and how does it help?

Lazy loading is a technique that delays the loading of images and videos until they are needed, such as when they come into the viewport. This helps improve initial load times and reduces the amount of data that needs to be downloaded upfront, enhancing overall performance.

How can I optimize images for my website?

You can optimize images by compressing them using tools like TinyPNG or ImageOptim, converting them to modern formats like WebP, and ensuring they are appropriately sized for their display dimensions. Additionally, using responsive images with the srcset attribute can help serve the right image size for different devices.