Although the default PDF presets are based on best practices, you may discover that your workflow requires specialized PDF settings that aren’t available using any of the built‑in presets. In this case, you can create and save your own custom presets for reuse in Photoshop or any product in the Adobe Creative Suite.
In Photoshop, you can save the preset using the Adobe PDF Presets command or clicking the Save Preset button in the Save Adobe PDF dialog box. Adobe PDF presets are saved as files with a .joboptions extension. This is useful, for example, if you want your vendor or printer to send you a .joboptions file with the Adobe PDF presets that work best with their workflow.