Opera has many useful hidden features that are not present in the browser interface, but displayed in external links. Opera does not have a page that lists the different pages available internally as we can find in Firefox with about: about or Chrome with chrome :/ / about. So you will have to manually enter the address of each internal page to access its contents.
opera:config
Page opera: config allows you to access many software settings. It is here that you can refine some options that do not appear in the menus of Opera. Feel free to rummage!
opera:plugins
Page opera: plugins displays a list of all installed plugins. You can disable a plugin by clicking the link Disable next to his name.
opera:history
Page opera: history shows a view of your browsing history different from that which can be found in the browser menu. Visited pages are sorted by day and by hour tour.
opera:historysearch
Page opera: historysearch lets you search your browsing history.
opera:cache
Page opera: cache lets you browse your browsing cache that contains the elements of web pages you've visited, including images, text, style sheets, videos, music, etc.. You can list the elements of each page visited and preview. If an item interests you, a picture for example, you can save it by clicking it and choosing Save Image.
opera:debug
Page opera: debug lets you connect to another Opera browser on another computer to access the browsing session. This can be used to solve a problem. To connect to another computer from this page, another user must enable the development tool Opera Dragonfly by clicking on the Opera menu, Page, and Tools Development Dragronfly then Opera. It must then click on the Configuration option for remote debugging. Select the port to use and validate. For your part, enter the IP address of the machine that contains the Opera as well as to control the port specified by the user and confirm.
opera:drives
Page opera: drives lets you browse your hard drives in a web-like interface.
opera:memdebug
Page opera: memdebug displays information about the memory usage of Opera.
opera:opera & WebStorage: webdatabases
The pages opera: opera and WebStorage: webdatabases provide information about the data stored locally on your computer by the sites visited.
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