Ranked in these QuestionsQuestion Ranking
Pro Low footprint in KDE
Konqueror usually has a low footprint when used in KDE because most of the resources needed are already loaded. This makes the startup time and general loading times between commands very fast compared to other browsers in KDE.
Pro Amazing file manager integration
Konqueror can also work as a file manager and it does a great job at that. You can view both local or remote files (through FTP, SSH, SFTP, and Samba protocol).
Con Lacks incognito/private mode
Konqueror lacks the option to browse the web in private mode, which is used when you don't want to leave any search history or avoid saving any cookies or cached data.
Con No large extension support
Konqueror is unable to tap into the large collection of Chrome extensions like many other browsers do. So the options to extend Konqueror's functionality are pretty limited.