Topic: Performance

A picture element snippet to load properly resized responsive webp images in browsers that support them.

slowfil.es is a service to evaluate if slow JavaScript/CSS files affect page performance.

The new content-visibility CSS property explained by Surma and Jake.

A look-back at caching strategies from the past; with recent changes in Chrome's and Safari's caching strategies, there is no caching benefit from using publicly available third-party libraries anymore.

Improve the loading of your responsive images by using link rel="preload" elements with the new attributes imagesrcset and imagesizes.