Converting a PNG screenshot, diagram, or image to PDF on iPhone takes seconds in Safari — no app needed.
Navigate to pdfeditor.onl/convert-pdf. Select Image → PDF.
Tap the upload area and select your PNG from Photos or Files. Multiple PNGs can be uploaded at once to combine them into a multi-page PDF.
Tip: To convert a screenshot to PDF on iPhone: take the screenshot, open Files (or Photos), tap the PNG, tap Share → Save to Files — then upload from Files.
Tap Convert. Download the PDF to your Files app.
Yes. Upload multiple PNG files — each becomes one page in the output PDF.
Yes — completely free in Safari on any iPhone.