Topic: Performance Page 5

I recently did some research into the HTML that Facebook was using in the old version of its iOS app. More on that in a future post. In the meantime, I thought I’d share how to inspect what an… More

As long as I’m posting puzzles, riddle me this: what happens to the browser’s lookahead pre-parser if we find the holy grail of responsive images—an image format that works for all resolutions? What is the holy grail responsive image… More

Over the last few weeks many more web developers and designers have become engaged in the conversation surrounding responsive images. On the whole, this is great news because the more people we have telling browser makers that this is a… More

Bruce Lawson has great post today called What Users Want from Mobile, and what we can re-learn from them. I highly recommend reading it. Bruce quotes from a survey of mobile web users and pulls out a few highlights… More

Scott Jehl recently tweeted: I concur. A couple of months ago, I asked what you preferred as a solution for responsive images. At the time, I didn’t have a strong opinion. But over the last… More

When it is AppleCoreMedia. Let me explain. I wrote recently about a quiz that we built that included HTML5 audio files. In addition to the volume problems already discussed, we encountered intermittent issues where the audio either would not… More

WordPress 2.8 introduced some constants and bits and bots that nominally make certain kinds of compression of JavaScript and CSS possible. This post looks at JavaScript compression and explains what is possible, and what is very, very hard. In a… More

Warning: Technical WordPress post ahead! Overview: Really Getting JavaScript Into the Footer Quoth the WordPress Version 2.8 feature list: – Improvements to the script loader: allows plugins to queue scripts for the front end head and footer, adds hooks… More

There’s an interesting article on mobiforge.com that talks about the pitfalls of using CSS sprites for mobile web content. While there are several reasons why sprites may not be a good idea, two stand out for me: CSS2 support… More

As many of you know, we’re fairly enamored with the YSlow techniques for understanding and evaluating web performance for web applications.  We have successfully used the information to improve the user-perceived performance for “traditional” websites and for mobile websites /… More