Category: Uncategorized

I wrote a post for the 2018 Performance Advent Calendar. In my ongoing goal to keep everything in one place, here is a link to the article:  https://calendar.perfplanet.com/2018/performance-anti-patterns-base64-encoding/

I blog a lot about data that I find in the HTTP Archive, and how I apply that data to improve websites.  One interesting thing that I continuously come across in the data are files with names like "optimized.jpg" or "/images/optimized/small.jpg" and then when I look at the images, they are not optimized for delivery … Continue reading Optimized For Performance

One of the main culprits for slowly loading pages is the presence of redirects.  The site tells the browser the content has moved, and a second request ash to be made for the content to actually be downloaded. A few years ago, I attempted to create a query to discover the webpage in the HTTP … Continue reading Too Many Redirects on Load Time

Redirects When a server redirects a request - the browser has to make a second request for the file, adding (at least) one additional round trip, and delaying the delivery of the content to the end user. As I was sitting around one day, I wondered ‘what is the maximum number of redirects on a … Continue reading Redirects, and their Effect on Performance or How a (Seemingly Minor) Third Party Change Affected the Website Performance of a Popular JavaScript Bundler

In an attempt to keep all my posts at least linked in one place, here are the two links to my series of posts: Part 1 is on the current state of video, based on data from the HTTP Archive. There are a lot of very large videos being served to mobile devices... A full … Continue reading State of Video: Smashing Magazine