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You can add one or more add-ons in the Mozilla Firefox browser to modify or enhance the capabilities of this browser. Mozilla Firefox checks for updates of the installed add-ons once everyday by default. But if you think this is too often, you can extend the update checking interval. For example, you can make Firefox check for add-on updates every week.

Many web sites show content borrowed from other third party sites like advertisements, counters, videos and maps etc. Often these third party sites track the behavior of the visitors by using methods like placing a cookie in users computer. The tracking of a visitor may reveal that persons internet browsing habits which is then used in showing targeted content. If you do not like this tracking business, you can opt out from being tracked in Firefox 4.

When you open many websites in multiple tabs inside an Internet Explorer window, it becomes difficult to switch to different tabs. This is specially true for Internet Explorer 9 in which the location bar and tabs are shown side-by-side in a small space. You can use the Quick-Tabs feature of the Internet Explorer to see a miniature view of all the open web sites in different tabs and then click on any of them to switch to that tab.

Most of the modern browsers support the location aware browsing. Any web site can request your geographical location (physical location) and display content accordingly. For example a restaurant can request your geographical location and display the branch nearest to you. If you do not want the Internet Explorer browser to send this information to any web site, then you can turn it off easily.

Following the footsteps of Google and Facebook, Twitter has also given an option to the users to always browse through secure HTTPS connection. When you visit a web site through the HTTPS connection, the data transfer to and from that site becomes encrypted. This way any middle-man (like your ISP) cannot eavesdrop on what you post on Twitter.

Like all the other moderns browsers Firefox 4 has also added support for utilizing GPU for video and animation playback on a webpage. This is called hardware acceleration and is enabled by default. But if you have a low end graphics card then it can make videos play very slow and you may have to disable hardware acceleration. After you have disabled the hardware acceleration, Firefox would use software rendering for all web page contents.

The WebM media format is an open-source free media format specially designed for the HTML5 video tag. The WebM plugin is based on the Matroska codec and features very high-quality video, better video playback even on older computers, ability to change the video speed and is open-source. Most of the web browsers support the WebM media format internally except Internet Explorer 9.

More and more browsers are supporting hardware acceleration for faster rendering of media rich web sites. Hardware acceleration makes use of the GPU in the computer to render the media embedded in a web page for faster and better results. In the Google Chrome hardware acceleration is disabled by default. Here is how you can enable hardware acceleration in Google Chrome web browser.