Hey, this is Sheldon, a HP customer executive. When the printer status is "Offline," it indicates that the computer cannot communicate with the printer. This issue can occur for various reasons. The possible reason for hp laserjet pro printer offline might be that network cable or USB cable is disconnected or Wi-Fi is not connected properly.  For wireless connections, make sure Wi-Fi is turned on the computer and make sure your printer is connected to the same Wi-Fi network. After that check your printer’s status. Your issue of hp laserjet pro printer offline will be resolved.