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Preferences > Advanced > History

Press Page Down and Page Up to switch slides

You can specify the maximum number of visited addresses Opera should remember. Visited addresses are all Web resources you have accessed -- your global history.

Press to empty the history list.

See your global history

Tip: You can also view and search your history of visited pages in the history panel.

Memory cache

Opera uses your computer's memory to temporarily store recently visited Web pages. It is generally a good idea to let Opera handle memory caching automatically.

Disk cache

Opera stores pages locally so that you can access them quickly when you revisit them. Increase the disk cache if you want to keep more local copies of Web pages, and keep them longer.

By default, Opera will cache all content (documents, images, and other content) on Web pages.

Click "Empty now" to delete all cached content from your disk. Check "Empty on exit" to do this automatically every time you exit Opera.

Note: Setting the disk cache to zero does not mean that nothing is written to disk, but that it will be avoided as far as possible.

See the contents of Opera's cache

Server checking

When you revisit Web pages, Opera normally asks for new versions even though most Web content is not updated very often. Checking for changes less often may speed up browsing.

Note: If you rarely check for changes, you may sometimes have to reload a Web page to get the newest version.

Learn more about history and cache