when export to pdf i got extra one empty page

Question

I am saving images into pdf document

let suppose I have 3 images and add them to the document it should show 3 pages. but what's happing is this I am getting 4 pages with the first page empty.I am using TPPDF pod for this

TPPDF Environment TPPDF version: 2.3.5 Xcode version: 13.0 Swift version: 4 or above

Demo Code / Project

let document = PDFDocument(format: .a4)
document.add(.footerLeft, textObject: PDFSimpleText(text: "Generated from Pdf Scanner"))
for eachImage in images{
    let imageElement = PDFImage(image: eachImage)
    imageElement.sizeFit = .height
    document.add(.contentCenter ,image: imageElement)              
 }
let generator = PDFGenerator(document: document)
let pdfUrl = (try? generator.generateURL(filename: "Example.pdf"))!

I am adding multiple images to the PDF. Loop is for that. And i need a Footer In Every Page — Muhammad Ahmad, Dec 01 '21 at 04:49
@MuhammadAhmad can you show your full code like also images array? — Kishan Bhatiya, Dec 01 '21 at 06:50
@KishanBhatiya because calling document.add(.footerLeft, ...) once will add the footer on all pages. — squall3d, Dec 03 '21 at 01:49
@MuhammadAhmad can you try fitting each image to a small artificial size (e.g. 100x100) to rule out overflows? — squall3d, Dec 03 '21 at 01:52
@MuhammadAhmad can you please update the question with your full code? — Kishan Bhatiya, Dec 03 '21 at 04:52

score 2 · Accepted Answer · answered Dec 04 '21 at 00:59

I suspect that one of your images is too large, but without access to the images I can't tell for sure. I created three images with SF Symbols and played with resizing the images. I can create the problem by setting the images too large.

    let images = [NSImage(systemSymbolName: "xmark", accessibilityDescription: "xmark")!,
    NSImage(systemSymbolName: "pencil.slash", accessibilityDescription: "pencil")!,
    NSImage(systemSymbolName: "pencil.and.outline", accessibilityDescription: "pencil")!]
    let document = PDFDocument(format: .a4)
    document.add(.footerLeft, textObject: PDFSimpleText(text: "Generated from Pdf Scanner"))
    for eachImage in images {
//      eachImage.size = NSSize(width: 400, height: 380)
//      above works
        eachImage.size = NSSize(width: 790, height: 760)
        let imageElement = PDFImage(image: eachImage)
        imageElement.sizeFit = .height
        document.add(.contentCenter ,image: imageElement)
    }
    
    let generator = PDFGenerator(document: document)
    generator.debug = true
    let pdfUrl = (try? generator.generateURL(filename: "Example.pdf"))!
    print("pdf location: \(pdfUrl)")

Note: generator.debug = true might be useful.

i am clicking all the images from the camera but i am gonna check if its the height if the image issue. — Muhammad Ahmad, Dec 06 '21 at 13:30
In addition to height, width can cause an overflow. Try writing the image size to the console log: `print("size: \(imageElement.size)")` just before adding to the document. — Bill, Dec 07 '21 at 02:02

when export to pdf i got extra one empty page

1 Answers1