Making GitHub’s new homepage fast and performant. A couple of really clever tricks in this article by Tobias Ahlin. The first is using IntersectionObserver in conjunction with the video preload=“none” attribute to lazily load a video when it scrolls into view. The second is an ingenious trick to create an efficiently encoded transparent JPEG image: embed the image in a SVG file twice, once as the image and once as a transparency mask.
Recent articles
- AI assisted search-based research actually works now - 21st April 2025
- Maybe Meta's Llama claims to be open source because of the EU AI act - 19th April 2025
- Image segmentation using Gemini 2.5 - 18th April 2025