Express Review: Going Offline by Jeremy Keith

Jeremy nails it again with this beginner-friendly introduction to Service Workers and Progressive Web Apps. The foreword to the book says “you’ll gain a solid understanding of how to put this new technology to work for you right away” and I’d say that is very accurate. One of the important things the book emphasizes is […]

Thoughts on the Contrast Swap Technique for Improving Performance

In her post three days ago on CSS Tricks, Una Kravets described a clever technique she discovered for significantly reducing image sizes on the web with little loss of quality. Essentially the idea is this:  Reduce the contrast of the image in Photoshop Re-apply contrast using CSS filter() With this process, Kravets managed to get […]