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I took pdfView, and I am trying to load pdf document on this pdfView. Pdf is not displaying/showing full screen w.r.t its pdfView as I added in storyboard. It has some gaps from top and bottom. Here is the code, I wrote swift if let path = Bundle.main.path(forResource: "file-sample_150kB", ofType: "pdf") {             if let pdfDocument = PDFDocument(url: URL(fileURLWithPath: path)) {                                  pdfView.autoresizesSubviews = true                 pdfView.autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleTopMargin, .flexibleLeftMargin]                 pdfView.displayDirection = .vertical                 pdfView.autoScales = true                 pdfView.displayMode =  .singlePage                 pdfView.displaysPageBreaks = true                 pdfView.document = pdfDocument                 pdfView.maxScaleFactor = 4.0                 pdfView.minScaleFactor = pdfView.scaleFactorForSizeToFit                 pdfView.usePageViewController(true, withViewOptions: [:])             }         } How I can remove that extra space from top and bottom and make/show/display that pdf document to full to screen w.r.t pdfView which I added in storyboard that same size. Any solution for this? Note - In my code/requirement displaying single page is needed i.e pdfView.displayMode =  .singlePage Here is project link - [https://github.com/MallikarjunH/TestPDFFullScreen1)