Block and Disable Flash or SilverLight in Google Chrome to Save Bandwidth
Flash and SilverLight contents especially advertisements that gets loaded automatically on your web browser will eat up unnecessary bandwidth usage. If you have a limited bandwidth usage from your ISP, it is advisable to turn off Flash and SilverLight support to conserve your Internet usage. Not only that, by blocking flash and silverlight contents, the web page will also finish loading much faster because flash files .swf tends to be huge, by few hundred kilobytes to even megabytes depending what it is for.
In Firefox, there is a popular extension called FlashBlock that blocks out flash contents in a web page. However for Chrome, you can have a similar plugin also called FlashBlock which is able to block all, or selective flash with the embedded whitelist manager. The extension automatically blocks flash content on webpages. Each flash element is being replaced with a placeholder that allows you to load only selected elements on a given page. In general, FlashBlock helps with lowering memory usage, reducing cpu cycles, and can be used as an alternative to AdBlock.
After installing FlashBlock extension for Chrome, by default only YouTube is allowed to load the flash content. You can go to the Options page to define your whitelist or if you are on a webpage that you want to temporarily load the Flash, you can just right click on the flash window and select Allow flash (temporary). The Always selection auto adds the domain to whitelist.