An inkjet printing system that includes a fixer fluid and a pigment-based inkjet ink. The fixer fluid includes a cationic polymer and an acidic crashing agent. The inkjet ink includes an anionic pigment and at least one of the following: at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight, at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight, and less than or equal to approximately 20% by weight of at least one organic solvent.