Page size setting problem

Hi sykosaffir,

It sounds like you want to change the paper size for a document that you're printing from your iPhone. We're glad you've joined us in Apple Support Communities. Let's see if this helps.

Let's double-check the information in Use AirPrint to print from your iPhone, iPad, or iPod touch. This link is a helpful guide for printing from your iOS device.

We noticed on your screenshot you're printer is set to "Default Settings." Have you had the chance to investigate your printer with what those default settings are set to? We ask because, ultimately, the print settings come from your printer not your iOS device. While some printers may provide resizing options, other printer manufacturers may not. On that note, this link from HP may help, HP printer setup (Apple AirPrint for iPhone, iPad). You'll see in the second line in step four from the section "Print from your Apple device" that it says,

"Available settings depend on the app you are printing from, the print job type, and your printer."

Additionally, we'd also highlight to check that the page size is correct in the original app the document was created in. As mentioned in in the HP link above.

If the issue remains after following those steps, let us know if you had a chance to reach out to your printer manufacturer for more help with what settings you should see there for your specific printer.

We hope that helps with your question and take care!