Previous 1 2 3 Next 31 Replies Latest reply: Aug 27, 2013 3:54 AM by ewalthert Go to original post
  • andyBall_uk Level 7 Level 7
    even the smallish rotation gif has a noticeable cpu hit, and as Klaus says, runs way too slow in safari or the latest webkit nightly. I can well imagine a ppc mac battling with a few of those.
  • Klaus1 Level 8 Level 8
    I can well imagine a ppc mac battling with a few of those

    No battle, just slightly slower!
  • steko Level 2 Level 2
    But on slower machines (Koen: iMac G5 1.8 GHz) it can be to much for the CPU on some sites.

    Check the example from the WebKit bug report:

    If the tab it runs in has focus, in Safari Activity Monitor shows up to 95% CPU on a single core (on first run of the loop), Firefox only around 5% here !
  • Klaus1 Level 8 Level 8
  • andyBall_uk Level 7 Level 7
    Yes, a better example - pushes safari up to 70-80% cpu here.
  • Koen Level 1 Level 1
    steko wrote:
    Could be related to this old WebKit bug:

    Yes, that looks very similar, and I've added that link to my bugreport, thanks.

    I also read somewhere that it was fixed on 10.6, explaining why for Snow Leopard users it's not an issue. But I have not tested that myself.
  • steko Level 2 Level 2
    You're welcome!

    And as I'm on Snow Leopard, it is still an issue...
  • RotaryP7 Level 1 Level 1

    Has this issue been fixed? It happens to me all the time on my MacBook w/ Snow Leopard. Haven't tried any browser except safari though since I just got the Mac. Is there a fix or do I need to install a different browser?

  • mrfcobf Level 1 Level 1

    I have the same problem.  I have completely reset Safari, and I even deleted the various plist files.  Safari is running well on all but a few sites, and it always seems to come down to the animated gifs.


    Here is one particular site:



    Depending on the particular page, it can cause a freeze of up to 90 seconds!


    I'm running a fairly new (15-18 month old) MacBook Pro, 10.6.7, no missing software updates, 4 gigs of RAM, 142.59 gigs free on my HD, and I'm only running a few apps, so my RAM isn't all used up.  I even ran a permissions repair and restarted about 10 min ago just for kicks.



  • joshuasp Level 1 Level 1

    It doesn't have anything to do with your machine. I am not sure why, but it's Safari. It's not webkit or the machine. I have tested the issue on the latest builds of Chrome, also a webkit browser, and firefox on several new Macs and iOS devices. All browsers run the animated gif easily on the different macs, except safari which has issues on all the devices including the iOS devices.  Here is the gif I made and have tested

  • andyBall_uk Level 7 Level 7

    Hi Joshua


    the example you posted causes no problems here on 10.6.7/safari 5, beyond the known capping of the framerate to ~10fps,

    which has been around long enough to suppose that Apple intend it.

  • RotaryP7 Level 1 Level 1

    No problems here either Joshua. Certain websites, especially forums w/ gif signatures causes Safari to lag.


    I'm wondering, is there any way in capping gifs to certain fps? It's getting really annoying and I'd hate to not use Safari. I use Chrome on my other PC's and like to just leave Safari running on this one. I'm on 10.6.8/Safari 5.

  • nbnlko Level 1 Level 1

    hey guys,


    Any gif animated image on my late 2011 MBP17 is excruciatingly slow to load up. And if the page holds mode than 3-4 gifs,… then all **** breaks loose. It's not the case of free space, or the cache ..or for that matter not an issue with the performace of the machine as i have an i7 with 16 gigs of ram. I would say plenty in order to display a simple gif. FlashPlayer is updated to the latest version .. all my stuff is updated to their latest verions ...


    Is there any fix for Safari nowadays ? I do not wish to use another browser just so that i can watch a couple of gifs ..



  • joshuasp Level 1 Level 1

    Do you have a link to the gifs you are referring to? I would like to test it and see if I have the same issue.


    Also Flash player will not affect gifs in anyway. Gifs are like a flipbook animation. They are made of various frames that they cycle through to create an animation. Their animation can be cycled continuously, set to play once or set to play a certain number of times. The major changes in gifs today are their frame rates. Newer browsers support a much faster frame rate play back. This means that the animation is smoother and not as choppy. The implication is that these gifs have a large amount of frames and it takes longer to download them. They are decieving in that way because a jpeg or png is loaded once, but a gif might have 50 frames which is like downloading 50 jpegs. It's really the responsibility of the designer who made the gif to ensue that a gif doesn't cause issues for the end user.

  • nbnlko Level 1 Level 1

    here is the link that made me post here

    But i don’t have just an issue viewing this specific site, or these specific gifs. This is a known issue for me on my MBP, as any gifs regardless from which site .. or my bandwidth .. they load up extremely slow.

    when i do a test with other people around me on their windows machines, they are able to view these gifs instantly.

    and this bothers me a lot, i mean .. there aren’t many things that i hate about my mac, i could probably sum them up to 5, and by far the most anoying one is the fact that whenever there’s a friend posting a gif .. i might as well skip the gif because i can’t spent 2 minutes to see a 10-15 frame gif.

    at the moment i’m on a low bandwidth (50KB up / 50 KB down), but as i said i have the same issue also when at home where my speed is 7MB down / 4-5 up.

    how could i fix this ..?