How to get actual pdf page size in iPad?

Question

How can I get PDF page width and height in iPad? Any document or suggestions on how I can find this information?

Answer 1

Swift 3.x (based on answer provided by Ege Akpinar)

let pageRect = pdfPage.getBoxRect(CGPDFBox.mediaBox) // where pdfPage is a CGPDFPage
let pageSize = pageRect.size

A more full example showing how to extract the dimensions of page in a PDF file:

/**
 Returns the dimensions of a PDF page.
 - Parameter pdfURL: The URL of the PDF file.
 - Parameter pageNumber: The number of the page to obtain dimensions (Note: page numbers start from `1`, not `0`)
 */
func pageDimension(pdfURL: URL, pageNumber: Int) -> CGSize? {

    // convert URL to NSURL which is toll-free-briged with CFURL
    let url = pdfURL as NSURL
    guard let pdf = CGPDFDocument(url) else { return nil }
    guard let pdfPage = pdf.page(at: pageNumber) else { return nil }

    let pageRect = pdfPage.getBoxRect(CGPDFBox.mediaBox)
    let pageSize = pageRect.size

    return pageSize
}

let url = Bundle.main.url(forResource: "file", withExtension: "pdf")!
let dimensions = pageDimension(pdfURL: url, pageNumber: 1)
print(dimensions ?? "Cannot get dimensions")