How to change the printer from offline to online mode?

printing performance. HP printer has many advanced features, so thousands of users choose HP printer for printing tasks. When I go for printing through my HP printer, my HP printer goes offline mode. I’m experiencing HP Printer Offline error, so I want to change the printer from offline to online mode in the proper ways. I don’t have the technical background to bring back from printer offline to online mode. Can you provide the easy tips to bring back from offline to online mode?