KeePass will fill in and submit the form. Press your Global Auto-Type Hotkey (on Windows, this defaults to Left Ctrl + Alt + A). With KeePass running as usual, click into the “username” field on any website for which you have credentials saved in KeePass. You might like to change the privacy settings to ensure that the extension will run on secure pages (without which it’s a lot less use) and on private tabs (if you make use of private tabs). It will begin working on any newly-loaded or refreshed pages immediately, or on all pages after a reload. Or: Download the extension from GitHub and install it by opening it in Opera. This browser extension for Opera enables tight integration with the Auto-Type Global Hotkey functionality of the KeePass password safe, without the hassle of tweaking Opera’s configuration file (only possible in older versions, Opera 12+ prevents the necessary change from being made) or manually installing User JavaScripts.

Update: Modern version of Opera support Google Chrome plugins, so you can use the equivalent Chrome plugin instead. Update: Opera 12.10 re-adds the missing feature that this plugin implements, so there’s no need to use this plugin if you’re using Opera 12.10 or higher.

Keepassxc opera