How to clear browser cache/history/cookies

Clear browsing data 

By default, Opera stores certain browsing data to help speed up connections, load common page elements, and improve your interaction with the sites you visit. You may wish to remove traces of your browsing habits by clearing your browsing data. To clear browsing history, delete browsing cache, or remove other data:

  1. Go to Settings.
  2. Click Advanced in the left sidebar, and click Privacy & security.
  3. Under Privacy and security, click Clear browsing data.
  4. Select a time range and the types of data you wish to clear, and click Clear data.

There are two categories for data types: basic and advanced. Basic includes browsing history, cookies and other site data, and cached images and files. Advanced includes these items plus download history, news usage data, passwords, autofill form data, content settings, hosted app data, and media licenses. Details below.

Browsing history – A list of sites you have visited. 

Download history – A record of the files you’ve downloaded. Clearing this will not delete the file you downloaded, only the record of where and when.

News usage data – Information on the frequency and the length of time you spend on a news article from the personal news page, which is used to customize what news you see.

Cookies and other site data – Data from websites you visit which is stored on your computer, such as site preferences and login status. 

Cached images and files – Data stored on your computer by applications or websites to make processes and site loading faster. Should be cleared periodically.

Passwords and other sign-in data – Data related to logging into websites and applications. Allows you to be signed-in automatically.

Autofill form data – Information like credit-card numbers, names and phone numbers, which you can choose to store on your computer in order to have forms filled in automatically.

Site settings – Permission data for websites, such as whether they can access your microphone or send you cookies.

Hosted app data – Data stored by extensions you have installed in your browser. Clearing this data will reset the extension to its default.

Read about Web Preferences for more information on what data you allow to be stored on your computer.