ios - Generate PDF with images from HTML in Swift without displaying print interface

Question

I generate a PDF in my Swift application from some HTML. I use a UIMarkupTextPrintFormatter and have code similar to this gist. I get the PDF as NSData and attach it to an email. The app does not show the PDF to the user before attaching it.

I'd now like to include some images. Adding their NSURL in HTML with my current PDF generating strategy doesn't work. How can I get NSData of a PDF corresponding to my HTML with images added? Here are some things I've tried:

1. This answer suggests embedding the base64 image in the HTML and using UIPrintInteractionController. This does give me a print preview with correctly-embedded images but how do I go from there to NSData corresponding to the PDF output?

2. I've seen some similar suggestions going through UIWebView but those lead to the same issue -- I don't want to show a preview to the user.

question from:https://stackoverflow.com/questions/40368144/generate-pdf-with-images-from-html-in-swift-without-displaying-print-interface