SUMMARY In the preferences, under Other, the button "Protocol Handlers Manager" brings up a dialog that offers an empty list and only a "Remove" button, so I cannot find any way to make that list non-empty. STEPS TO REPRODUCE 1. Start Falkon. 2. Edit / Preferences 3. Select the "Other" tab. 4. Click the "Protocol Handlers Manager" button. OBSERVED RESULT There is only a "Remove" button, and the list is already empty, so it cannot be changed to anything other than an empty list. EXPECTED RESULT I would expect at least an "Add" button. SOFTWARE/OS VERSIONS Fedora 28 with updates Falkon 3.1.0 (AdBlock and KDE Frameworks Integration extensions loaded) KDE Plasma 5.13.5 KDE Frameworks 5.55.0 QtWebEngine 5.12.2 Qt (QtBase etc.) 5.11.3
This is only for web protocol handlers, if the site supports it you will be able to install the handler by clicking on the site icon in locationbar.