Can you change printing size on pdf when printing from iPhone?

Hi lyzette224,

​Thank you for using the Apple Support Communities. It looks like you have a question about printing from an iPhone. We're happy to see how we can help.

When you say you want to change the printing size, what are you referring to exactly? Printing on a different paper size, changing the size of the text in the PDF, or something else?

Which app are you using? If your printer has an app made by the manufacturer, checking your settings for printing options within that app would be your best start. Let us know what you find.

Take care.