Opera Help and Support

Opera allows for a wide range of cookie setups. You can allow all cookies to be stored on your computer. You can refuse all cookies to be stored. Or, you can selectively allow certain cookies and certain types of cookies. Your first option is whether to enable cookies at all. Note that you may have difficulties logging on to a significant amount of Web sites if you leave this unchecked. The next step is deciding which cookies to accept and which to refuse. You can choose to allow only cookies that are set by the Web site you...

Cookies are: Strings of text, pieces of information stored in files that Web servers store on your computer when you are browsing. These files let the same servers recognize your computer the next time you visit their sites. Cookies are not: Viruses. They cannot cause direct damage to your computer system in any way, but they can record your browsing habits in intrusive manners and trace your movements across different Web sites. Some sites use cookies to store your user name, which means, for example, that for...

All browsers keep records of where you have been on the Internet, and even store Web pages and other files (such as graphics) in a local folder known as the cache. Your cache folder can thus contain sensitive information. If you do not want other users to know about certain sites that you have visited, your history may point them to these sites, and your cache may contain local copies of the content of those sites.If you do not want Opera to store your history, go to Tools > Preferences > Advanced > History and set...