iPad print to pdf?

Use the regular print function. Enlarge the print preview by placing two fingers on the preview and spreading them apart. Tap the sharing icon. Select "Save to Files". Follow the prompts to select a folder. Tap "Save" in the upper right corner.

What do you mean with "print to pdf"? .pdf is a format - you can print a document in .pdf format, but you cannot print to it (unless there is an app named .pdf you are trying to save it to?

Glad it helped!