So you want an auto-playing looping video without sound? In popular vernacular this is the very meaning of the word GIF. The word has stuck around but the image format itself is ancient and obsolete. Twitter, for example, has …
The <picture> element has a trick it can do where it shows different image formats in different situations. If all you are interested in is formats for the sake of performance, maybe you’d do:
<picture<source srcset="img/waterfall.avif" type="image/avif"<source srcset="img/waterfall.webp" 
Steve Faulkner has a clever idea here. You can show an (animated) GIF and overlay a pause/play button on top of it — which is really a <details>/<summary> element. When toggled, a (non-animated) JPG inside covers the …
The other day, Cassie Evans tweeted a really neat trick that I’ve never seen before: using SVG to mask one GIF on top of another. The effect is quite lovely, especially if you happen to grab a colorful GIF and …
Did you see that neat technique for using the <picture></picture> element with <source media=""/> to serve an animated image (or not) based on a prefers-reduced-motion media query?
After we shared that in our newsletter, we got an interesting …
Safari 11.1 shipped a strange-but-very-useful feature: the ability to use a video source in the <img /> tag. The idea is it does the same job as a GIF (silent, autoplaying, repeating), but with big performance gains. How big? “20x …
I bet you’ve seen it. A video background that takes up the entire browser window. There is text on top of it (hence, “background”), which is an interesting effect that you don’t see every day. The biggest reason you don’t, …
Ire Aderinokun describes a frustrating problem that we’ve probably all noticed at one point or another:
…Recently, I’ve found that some of my articles that are GIF-heavy tend to get incredibly slow. The reason for this is that each frame
This is pretty big news: earlier today the WebKit team announced that iOS 10 will now support silent <video> elements with the autoplay attribute, which is a big deal for performance. Jer Noble describes the update in much more detail: …
