It’s an attributed string, so it will retain formatting from the PDF as best as it can. But in PDFKit I cannot find the property like ' image ' to set, the only property related to stamp annotation is stampName. Now I want to add an image annotation to the pdf page, I think the annotation subtype should be stamp. Let us start by selecting a Single View App template and name the project as PDFDemo. It’s used when you want to put your PDF into a PDFView, but it’s also useful when you just want to read text from the PDF: you can loop over each page in the PDF, read its attributedString property, then append it to an attributed string containing all the text from the PDF.įirst, add import PDFKit in the Swift file you’re using, then add the following example code to read out the text contents of a file: if let pdf = PDFDocument(url: yourDocumentURL) Apple’s PDFKit framework provides a huge range of code to help us work with PDFs, including a dedicated view for rendering thumbnails of PDF pages: PDFThumbnailView. I am using PDFKit in iOS11 to develop a app which can show pdf file add annotations. In this demo, we will be using PDFKit to View and Annotate PDF file. Swift iOS - Overlay text onto PDF with PDFKit and UI. According to the allocations instrument, zooming drastically increases the memory size of the IOSurface elements associated with annotations. Im using the following code to draw text on a PDF Document.This seems to draw the text only on a single page.Im trying to iterate through each page,draw string on it and finally display the PDF. PDFKit comes with a built-in class called PDFDocument, which allows us to load and parse PDF documents. Even if I save the file to disk and reopen it fresh, zooming in with ink annotations causes a crash due to memory consumption. How to extract text from a PDF using PDFKit
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