Slow Animated GIF Performance in Safari

I noticed in the post The Truth About the Spinning Dancer, the animated GIF of the dancer spins significantly slower in Safari 3.1.1 vs. Firefox 2.0.14 running Mac OSX 10.5.2.  This is with a fresh launch of each program and only the page showing.  At first I thought it was the computer that I use at work, the original MacPro 2.0 Dual G5, but it’s the same on my home computer a MacPro Intel Quad Core.

CPU usage is actually about 30% more for Safari vs. Firefox while the animation seems to be about six times faster for Firefox.

Scrolling the image off of the screen reduced CPU usage by 50% in Firefox.  While in Safari, scrolling the image off screen reduced CPU usage to nearly zero.

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  • Reply Brendon May 12, 2009 at 11:07 pm

    Ive just been trying all day today to figure out why my animated gif doesn’t play in safari as fast as it does for firefox. I couldn’t find one solution other than don’t use safari. Pretty annoying though…

  • Reply MT May 15, 2009 at 9:55 am

    Yeah, it’s annoying. It’s still slow in Safari Version 4 Public Beta. Otherwise, Safari is pretty fast.

  • Reply Guy person December 7, 2009 at 11:23 pm

    Yeah, does the same thing on iPhone, it must be safari itself. Incredibly irritating.

  • Leave a Reply to MT Cancel Reply