Clicking with the Dolphin displays a context menu with an item . The menu has these additional items to extract an archive using Ark:mouse button on an archive in a filemanager like
creates a subfolder in the folder with the archive and extracts the folders and files into it.
opens the Extract dialog where you can choose destination folder and various extraction options.
extracts the content of the archive into the same folder.
Dolphin's context menu for a selection of files and/or folders displays these actions in the submenu:
or creates these archive types in the current folder.
opens a dialog where you can select folder, name and archive type.