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PSPDFKit is the best framework for working with PDF files. For maximum flexibility, you can write your own UIKit or Core Graphics drawing code toPDF Rendering CGContext class. Use this class to create a CGContext that will output the results to a PDF file. Apple Developer: Core Graphics Framework Reference Programming with Quartz: 2D and PDF Graphics in Mac OS X (Amazon) – by David Gelphman, Bunny Laden (I Core Graphics Data Types A reference to a display configuration transaction. A level assigned to a window by an application framework. The Core Graphics framework is based on the Quartz advanced drawing engine. It provides low-level, lightweight 2D rendering with unmatched output fidelity. Graphics context and primitives to draw in them. CGContextPDF. PDF Rendering CGContext class. Use this class to create a CGContext that will output the results