On the HTTPArchive, Rick Viscomi found that images on sites hosted with WordPress are generally optimized better than on sites that do not use WordPress. Well, this site uses WordPress. I found a 2.1 MB image of a sea star (2268 × 4032 = 9.1MP) that I took with my phone. I simply uploaded it into WordPress, … Continue reading Image Test
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In recent posts, I have broken down how HLS video streaming works, and how the player can adapt the bitrates to ensure a great player experience. In this post, we'll walk through an example of a video (or three) that must quickly adaapt to the available network conditions. While I was testing a site with … Continue reading Video preload=auto and adaptive bitrate
In my previous posts “What is Video Streaming” and “Video Streaming: Reducing Stalls with Adaptive Bitrate” I introduced how video streaming works, and how Adaptive Bitrate helps the video adapt to the device and the network conditions to improve video streaming. In this post, I’m going to dig deeper into Adaptive Bitrate, and look at … Continue reading How HLS Adaptive Bitrate Works
It is pretty well regarded in the Web performance community that compressing text files (with algorithms like Gzip or Brotli) ensures that they download faster. Gzip (in general) compresses text files 5-8x smaller, and Brotli's compression is (generally) better than Gzip. WebpageTest grades your website's use of text compression at the top of every report: If … Continue reading Text Compression Really Works To Speed Your App!
The HTTPArchive is a great tool for learning about what makes the web tick. Every 2 weeks, the top 1M sites are tested on Chrome and on Android with WebPageTest, and the results are opensource and easily searchable with Google BigQuery. My role at AT&T on Video Optimizer has me studying how video is transported … Continue reading HTTPArchive and Requests to Localhost
SpeakOfTheDevrel.Cloud: Doug Sillars 