Learn about how to optimize web fonts for Core Web Vitals.

I took a real app and converted it from Styled Components to Linaria to compare the app performance of CSS-in-JS and normal CSS.

This article covers CSS-related techniques for optimizing Web Vitals.

Web fonts are often terrible for web performance. With CSS font descriptors, we might be able to solve our font loading troubles for good.

Deep-diving on the load performance of F1 websites.

Fine-tune your font files and optimise your loading strategy for maximum speed + minimum FOUT.

Learn about how cookie notices affect performance, performance measurement, and UX.

This is the complete guide to the metrics, methods, and measurements of web performance in 2021.

Images have also been a key part of the web. They communicate ideas instantly, but they are also a lot heavier than text to load.

The iconic 1996 "Space Jam" website was recently relaunched to promote the new movie.

Auditing CSS is not a common task in a developer’s everyday life, but sometimes you just have to do it.

Learn the most common speed issues caused by CSS and how to avoid them.

Learn how several next-gen image codecs (JPEG 2000, WebP, AVIF, and JPEG XL) compare to JPEG in compression density, features, etc.

An update on phones, networks, browsers, and the new baseline scenario for web performance.

In a new short series of posts, we highlight some of the useful tools and techniques for developers and designers.

Make your site faster and more environmentally-friendly by taking a system-fonts-first approach.

Zach Leatherman wrote up a comprehensive list of font loading strategies that have been widely shared in the web development field.

In this post I’ll outline 8 image loading optimization techniques.

This post is the third installment of our five-part series on building GitHub’s new homepage.

In this article, we’ll take a close look at some of the changes we made on this very site to optimize the web performance.