Example implementations relate to fast page first print optimization. For example, a system according to the present disclosure, may include a host driver coupled to a printing device. The host driver may send a command to the printing device indicating implementation of a fast page first feature, implement a page description language (PDL) on the printing device that defines print parameters for a print job on a first command of each page of the print job. Moreover, in response to the definition of the print parameters, and during or prior to startup of a print engine on the printing device, the host driver may determine if a print optimization of the fast page first feature would reduce a first page out time (FPOT) of the print job.