If your HP printer is offline then it is quite obvious that it won’t be able to communicate with the laptop/desktop and your printing task won’t get done. To get it back online, make sure that your printer is connected to a power source and is turned on. If the LCD is blank then it is off. Verify whether your printer is in sleep mode and if it is then turn it online. In case you are unable to fix HP Printer Offline issue then get help from experts to resolve it.