Render PDF document to UIImage

PDF2UIImage.m

NSString *pdfPath = [[NSBundle mainBundle] pathForResource:@"pdf_name" ofType:@"pdf"];//this is assuming the pdf is in the main bundle
NSInteger pageNumber = 1;//for a one-page PDF
    
CGSize containerSize = self.imageView.bounds.size;
UIGraphicsBeginImageContext(containerSize);
CGContextRef context = UIGraphicsGetCurrentContext();
    
const char *pdfFileName = [pdfPath cStringUsingEncoding:NSASCIIStringEncoding];
CGDataProviderRef pdfDataProvider = CGDataProviderCreateWithFilename(pdfFileName);
CGPDFDocumentRef myDocument = CGPDFDocumentCreateWithProvider(pdfDataProvider);
CFRelease(pdfDataProvider);
    
CGPDFPageRef page = CGPDFDocumentGetPage(myDocument, pageNumber);
    
CGContextTranslateCTM(context, 0.0, self.imageView.bounds.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
    
CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, self.imageView.frame, 0,true);
CGContextConcatCTM(context, pdfTransform);
    
CGContextDrawPDFPage(context, page);
CFRelease(myDocument);
    
CGImageRef imageRef = CGBitmapContextCreateImage(context);
UIImage *pdfImage = [UIImage imageWithCGImage:imageRef];
CFRelease(imageRef);
UIGraphicsEndImageContext();