How can I save a PDF file to my camera roll?

The Apple iOS doesn't provide a kind of way to save PDF directly into Camera roll, but alternatively you can be use iBooks, Save PDF directly into iCloud Drive or open up PDF file and take a screen shot (on your iPhone Press Sleep/wake button and Home button Simultaneously) to take it into Photos app.

You can only save Photos to the camera roll. Your options would be to take a screenshot like Rudegar suggested or print the pdf and take a photo of it.

Where is the pdf file now? You can simply save it to iBooks or download the free Adobe Reader App and save it there.

There are many PDF-IMG conversion apps on the App Store, and also many conversion apps on the windows store or online software.

Try this if you're looking for a quick, free app to suit your needs:

PDF to Images by Miles Jordan Software

https://appsto.re/au/eGbaY.i

pretty sure it's photos only but you can take a screenshot while displaying the pdf file

why do you want to do that?

You can use a web browser like icap to upload to a server.

R