While looking at a WebPageTest waterfalls, I often come across surprising attributes. A few weeks back, I came across a page that had images with a familiar file naming convention: https://twitter.com/dougsillars/status/1086196363010949121 This website is using the Mac screenshot tool to create images that they are using online! Image Optimization I've written a lot about … Continue reading Using Screenshots in Production
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As users of the web, we all know what a 404 error means: "File Not Found." There are memes and jokes made about things that are not found and the number 404. (https://http.cat is a fun site) But, when you cannot find things, everything takes longer. Just think about how much time you spend … Continue reading Four Oh Four: Performance Not Found
Every few months, I like to take a deep dive into the HTTP Archive to understand how the web is using various technologies. In 2018, I wrote about Images, video and Base64 encoding. In today's post, I want to take a look at how the web is using Animated GIFs. (and thats a hard G in GIF, … Continue reading State of the Web: Animated GIFs
This past weekend, I was poking around in the HTTP Archive, and I found a site with a 314 MB video that autoplays. Now, there is a bug in Chromium where videos larger than 100 MB skip the cache - and I left the page open for a long time - so devTools told me the … Continue reading Mobile Warning for Large Websites
Augmented Reality and Virtual Reality (AR/VR) are cool technologies that are coming more and more mainstream. While today they may be primarily in games, and some require fancy headsets like Oculus, there are technologies that are bringing AR/VR into the mainstream. For example, A-Frame is a web framework that allows you to bring VR experiences … Continue reading glTF: An Image Format for AR/VR
