Some people get annoyed when visiting some websites that have an image that seem to be rotating indefinitely. Most of these animated images are in the .gif format. You don't have to contact the webmaster and file complaints, after all, how many webmasters will you contact? How many will respond? and how many will actually remove the images? DIY. Stop the madness easily from your computer by doing the following:

Wait until the page is full loaded, then:

1. For Internet Explorer (IE) users: Press the 'Stop' or 'Esc' button on your keyboard
or Go to Tools & Internet Options,  click on the "Advanced tab", then go to "Multimedia", now un-check the "Play animations in web pages" option and finish by clicking the "OK" button.


2. For Firefox (FF) users: Press the 'Esc' button on your keyboard
or Go to your browser's "about:config" then search for "image.animation_mode" then change the value to "once" this will just play the animated GIF once, click OK or Save or Finish button. 
or To completely block ALL animations in any website you load, go to your browser's "about:config" then search for  "image.animation_mode" then change the value to "none" if you however change your mind and now you want to see the animated GIFs go back to "about:config" then search for "image.animation_mode" then change the value to "normal".  
or Try the flash blocking Firefox addon on Firefox. All animations based on Adobe Flash will be blocked this way, the commonly used one is the "FlashBlock" add-on (flashblock.mozdev.org) which stops flash files from loading automatically.
 
3. For Opera users: Press [F12] on your keyboard then un-check the "Enable GIF/SVG animation" in the option.
4. For Konqueror 2.2.x users: Right click on it and select "Stop Animations"

Live example, click here to visit my other post which has a .gif image and try the tricks explained above and see what happens.

NOTE:
As I said before, this works ONLY with animated .gif images, it may not work with other flash, banner, ad or logo. You will benefit much from Firefox's image & ad block addons which works on an array of images.