Theme – dark vs. light

You can switch between two themes, light or dark. These themes change the appearance of the browser’s tab bar and the combined address and search bar.

By default, Opera is set to light theme. To enable dark theme, go to Easy Setup from the top-right button of the start page, or under Settings > Appearance and turn on Enable dark theme.


You can change how your start page and other Opera pages appear by applying wallpapers. There are a few preloaded wallpapers in Opera, and you can find them in Settings > Wallpapers. You can also access wallpapers by clicking the Easy Setup button in the top-right corner of the start page.

Click on a wallpaper to change the look of your browser. Or, if you want to find more wallpapers, click the Get more wallpapers button to go to the wallpapers section of From there, you can browse and install wallpapers created by the Opera community.

The wallpapers you download from the site can be found under Settings > Wallpapers or from the Easy Setup menu.

Add your own wallpaper

You can create a wallpaper from any image you find on the web. Ctrl+click (Mac) or right-click (Win/Lin) an image and select Use Image as Wallpaper.

You can also create your own wallpaper with any image stored on your computer. To do so:

  1. Go to Settings.
  2. Under Wallpapers, click the Add your wallpaper button.
  3. Browse and select an image from your system.

The image will become your new wallpaper and it will be added to your list of wallpapers.


Extensions are tools and applications designed to give the Opera browser a variety of new capabilities, from protecting users from web threats to weather apps, online dictionaries and translators, developer tools, and much more.

To manage your extensions, select View > Show Extensions on Mac, and O Menu > Extensions on Windows and Linux. You can also click the box icon in the sidebar from the start page.

Click the Get more extensions link in the sidebar to go to the extensions section of From there, you can browse and install extensions created by the Opera community.

Some extensions will appear by default at the right side of the combined address and search bar. Click the extension’s button to interact with it, or Ctrl+click (Mac) or right-click (Win/Lin) it to change its options or view more options in the extension manager.

Enable extensions sidebar

There are specialized sidebar extensions which can be accessed with the extensions bar. When enabled, this sidebar will remain present with you throughout your browsing session.

To enable the extensions bar on Mac, select View > Show Extensions Bar.

To enable it on Windows or Linux, go to O MenuExtensions and select Extensions sidebar.

Your sidebar extensions will be added to the extensions bar. If you wish to add more extensions, click the + button in the sidebar.

To hide the extensions bar on Mac, select View > Hide Extensions Bar. On Windows and Linux, go to O MenuExtensions and deselect Extensions sidebar.

Changing languages in Opera

Opera is translated into many languages, making it easier for you to browse in your native language. Opera will use your system’s default language to set the browser’s language.

To change the language of your Opera browser on Mac:

  1. Go to your Mac’s System Preferences.
  2. Click Language and Region.
  3. In the Preferred languages: box, click and drag a language to the top position.

Refresh your browser to complete the change of language.

To change the language of your Opera browser on Windows or Linux:

  1. Go to Settings.
  2. Click Advanced in the left sidebar, and click Browser.
  3. Under Languages, click Language.
  4. Click next to a language and click Display Opera in this language.