In Pictures: Turbo-charge your browser with these ...
Chrome | Firefox
If Flash animations and videos loaded in the background are slowing down your computer, FlashBlock can help fix this. It automatically blocks Flash elements on web pages and replaces them with a placeholder. You can click on the placeholder to load the video and also set up a whitelist for sites like YouTube and Vimeo.
In Pictures: Turbo-charge your browser with these top add-ons