Comments on: Website Performance Tweaks, Part Two

By: Martin Kliehm

Martin Kliehm — Thu, 26 Jul 2007 19:22:59 +0000

@Bill: You are right, in Nate Koechley's presentation as well as in Steve Saunder's example pages the Flash of Unstyled Content is one reason why they ask to put CSS in the head. But the graph on page 71 of the presentation shows that stylesheets loaded with the @import rule load last, after all content. That behavior is unrelated to the FOUC bug.

By: Bill Q.

Bill Q. — Thu, 26 Jul 2007 15:59:14 +0000

“avoid @import as it loads last, even after the images!”

I assume you are referring to the Flash of Unstyled Content (FOUC). It should be noted that FOUC is a browser bug. There is no W3C standard or anything that says browsers need to load @import rules differently. Another thing to note is that FOUC is no longer an issue on IE7 or Safari 3.0 — the two browsers that originally had FOUC issues. (And Safari’s FOUC issues had nothing to do with @import in the first place).

By: Christophe Strobbe

Christophe Strobbe — Tue, 17 Jul 2007 14:22:49 +0000

Hi Martin, have you read Kyle Cordes’s blog post on the “YouTube Scalability Talk”? It's definitely worth reading.