How do I turn a file into a pdf document?

To turn

• a pic or screenshot into a pdf document

1. You need To save the pic or the screenshot to your files app. to do that select the pic or screenshot in your photos app then click on the the share button and scroll down to save to files.
2. once it’s saved in your files app . open the files app and then click and hold on the pic or screenshot and scroll down to create pdf.