Choose the print options by tap it5. Tap Share. Click on the PDF button6. Tap the button How to Convert Picture to PDF on iPhone 1. Open the Photos app. This icon looks like a multicolored flower. You can find this app on your home screen or by searching. 2. Tap Select. You can drag and drop the picture you want to save into the library. How to Convert Photo to PDF on iPhone — Share 1. Open the iPhone Photos app. This icon looks like a multicolored flower. You can find this app on your home screen or by searching. How to Convert a Photo to PDF on iPhone — Re-Addle (3 different versions) 1. Open the iPhone Photos app. This icon looks like a multicolored flower. You can find this app on your home screen or by searching. 2. Tap Select. You can drag and drop the picture you want to save as a PDF into the library. How to Convert a Photo to PDF on iPad: 6 steps 1. Open Photos on your iPhone. This icon looks like a multicolored flower. You can find this app on your home screen or by searching. 2. Tap Preview. It looks like a phone number. It will take you to the library. To go to the library, tap. You can also tap the file to open it in PDF Expert. 3. Open a photo and tap Add. You can select a file to re-attach to the library from the library icon in the top left of the app. 4. Tap Share.