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A Deep Dive into Native Lazy-Loading for Images and Frames


Today's websites are packed with heavy media assets like images and videos. Images make up around 50% of an average website's traffic. Many of them, however, are never shown to a user because they're placed way below the fold. What’s this thing about images being lazy, you ask? Lazy-loading...

Google Fonts is Adding font-display


Google announced at I/O that their font service will now support the font-display property which resolves a number of web performance issues. If you're hearing cries of joy, that's probably Chris as he punches the air in celebration. … Read article The post Google Fonts is Adding...

Crypto Heresy: Question Blockstream on Twitter and You’ll Be Blocked


Crypto Twitter (CT) is a grueling battleground between digital currency enthusiasts, company executives, maximalists, journalists, lawyers, and so-called thought leaders and luminaries. For instance, on May 8, reporter Larry Cermak posted data concerning Blockstream and its sidechain project...

Preload, prefetch and other link tags


Ivan Akulov has collected a whole bunch of information and know-how on making things load a bit more quickly with preload and prefetch. That's great in and of itself, but he also points to something new to me – the as attribute: <link rel="preload" href="/style.css" as="style"...

The Serif Tax


Fonts are vector. Vector art with more points makes for larger files than vector art with fewer points. Custom fonts are downloaded. So, fonts with less points in their vector art are smaller. That's the theory anyway. Shall we see if there is any merit to it? Open Sans (top) and Garamond...

Native Lazy Loading


IntersectionObserver has made lazy loading a lot easier and more efficient than it used to be, but to do it really right you still gotta remove the src and such, which is cumbersome. It's definitely not as easy as: <img src="celebration.jpg" loading="lazy" alt="..." /> Addy Osmani says...

Responsible JavaScript


We just made a note about this article by Jeremy Wagner in our newsletter but it’s so good that I think it’s worth linking to again as Jeremy writes about how our obsession with JavaScript can lead to accessibility and performance issues: What we tend to forget is that the environment websites...

Who has the fastest website in F1?


Jake Archibald looks at the websites of Formula One race teams and rates their performance, carefully examining their images and digging into the waterfall of assets for each site: Trying to use a site while on poor connectivity is massively frustrating, so anything sites can do to make it less...

Chrome Lite Pages


The Chrome team announced a new feature called Lite Pages that can be activated by flipping on the Data Saver option on an Android device: Chrome on Android’s Data Saver feature helps by automatically optimizing web pages to make them load faster. When users are facing network or data constraints...

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