Simon Willison’s Weblog

Items tagged css, performance

Filters: css × performance ×


To Sprite Or Not To Sprite. CSS sprite images are decompressed to full bitmaps by browsers before they are rendered, so sprite files with large numbers of pixels will dramatically increase the memory footprint of your site. # 24th June 2009, 10:33 am

Yahoo!’s Latest Performance Breakthroughs. 20 new performance tips to join the previously published 14. Flushing the buffer while the backend code is still working to cause the browser to start loading CSS earlier is interesting. # 20th March 2008, 3:17 pm

“Why doesn’t jQuery have an XPath CSS Selector implementation?” For now, my answer is: I don’t want two selector implementations—it makes the code base significantly harder to maintain, increases the number of possible cross-browser bugs, and drastically increases the filesize of the resulting download.

John Resig # 11th February 2008, 5:31 am

CSS Sprite Generator (via) Upload a zip file of images and get back a CSS sprite plus a set of pre-calculated background image rules. Tool built by Ed Eliot and Stuart Colville for their forthcoming book “High Performance Web Site Techniques”. # 27th September 2007, 10:59 pm