Cookies can also be used to construct a profile of your browsing habits and are therefore regarded by some as a privacy issue. Setting cookie preferences gives you control of how Opera handles them. The default setting is to accept all cookies. To set your cookie preferences:
If you block ads, web pages will load faster and look cleaner. By blocking ads with Opera’s built-in ad blocker, you also block the source of many tracking cookies. The ad blocker also stops cryptocurrency mining scripts.