Pre-rendering prior receiving a command to print is disclosed for a pre-rendering system for online and offline documents. In an example thereof, a plug-in is hosted in a computing device. A system service operative by the computing device is configured for receiving commands from the plug-in. The system service is configured to issue an instruction responsive to a command from the plug-in to at least one of a printing manager of a server or a printer engine of a printing device. The printer engine is configured to pre-render a document image to provide a pre-rendered document image responsive to the instruction. In another example, a plug-in is hosted in a computing device including an image processor. A system service operative by the computing device is configured for receiving commands from the plug-in. The image processor is configured to pre-render a document image responsive to a command of the commands.