1. Launch Opera browser and click on the Menu Tab located on the top left corner of the page. Go to ‘History’ as shown below. (Alternatively, you could access the menu by holding ‘Ctrl + H’ on Opera page).
2. From the new window that pops up, click on ‘Clear Browsing Data’.
3. In the pop-up that appears, choose data types you wish to clear. Choose a timeframe to delete the cached history from the drop-down list.
4. Click on Clear browsing data and that's done now, all your chosen data history have been removed from browser cache.