Under the main menu in Opera, go to Settings > Privacy & Security. While it should be secured behind your Google account (use a password manager and two-factor authentication for the best protection), if you truly wish to be rid of history, go here, select the hamburger/three-dot menu up top > Activity Controls to turn off the inclusion of Chrome browser activity (from desktops and handhelds), as well as delete any activity synced with the service. What's more, if you have a Google account and are signed into it with Chrome, your history is likely being synced to Google My Activity. It just collects and collects until you go in and delete it.
Better yet, you can delete only the info from the last hour, day, week, month, or all of it to 'the beginning of time.'Ĭhrome doesn't give you the option to not collect your browser history, or set a window for how much it should hold. This takes you directly to the dialog box to delete not only the history of your browsing, but also your download history (it won't delete the actual downloaded files), all your cookies, cached images and files (which help load pages faster when you revisit), saved passwords and more.
Go to the three-dot menu at the upper-right of Chrome to select Settings > Show advanced settings > Clear browsing data (or in the omnibar type 'chrome://settings/clearBrowserData' without the quotation marks).