A few months ago, I blatantly ripped off Charlie Gleason’s idea. His presentation at MelbJS featured greyscale, full-screen, animated GIFs (of his own face, among other things) behind the text on many slides. I discovered that he’d painstakingly edited and optimised each GIF in Photoshop so it looked good behind the text on each slide. I wanted to do the same thing, but without all that work. The
![CSS filters, GIFs, and performance](https://cdn-ak-scissors.b.st-hatena.com/image/square/d0d6d3e081b99a371e610584ee9744c476ee3859/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F0%2A9q22pEjd4s_jm1vU.png)