Open the file, photo, webpage, or note you want to save as a PDF
Tap the Share button
Scroll and tap Print
On the Print preview, pinch out on the preview image to open the PDF
Tap the Share button again
Tap Save to Files
Choose a folder and tap Save
To make a PDF from a photo, open Photos, select the photo, tap Share, then follow the same steps
To make a PDF from Safari, open the webpage, tap Share, then follow the same steps
To make a PDF from Notes, open the note, tap Share, tap Send a Copy, then choose Print and follow the same steps
To make a PDF from multiple pages, select multiple items in Files or Photos, tap Share, then follow the same steps
To edit or create a PDF directly, use the Markup tools after opening the PDF in Files or Books