All the drawing had to be done by accessing the context of the page. Using Core Graphicsīefore the introduction of PDFKit, Core Graphics was the only way to create and modify PDFs on iOS.
One is by using Core Graphics, and the other is by using PDFKit.
There are a couple ways to draw an image in a PDF using the available frameworks on iOS. As an example, you might need to add an image to a PDF as part of its original content as opposed to later adding it as an annotation. You can take an existing image and insert it into a PDF in the form of an annotation, or you can make it a part of the PDF content by drawing it. The PDF format allows you to draw and render any type of content you want.
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