PdfPig

Reference

• https://uglytoad.github.io/PdfPig/
• https://github.com/UglyToad/PdfPig

Overview

• Read and extract text and other content from PDFs in C# (port of PDFBox)
• Extracts the position and size of letters from any PDF document. This enables access to the text and words in a PDF document.
• Allows the user to retrieve images from the PDF document.
• Allows the user to read PDF annotations, PDF forms, embedded documents and hyperlinks from a PDF.
• Provides access to metadata in the document.
• Exposes the internal structure of the PDF document.
• Creates PDF documents containing text and path operations.
• Read content from encrypted files by providing the password

Sample Code to read PDF file

private static void Main()
{
    using (PdfDocument document = PdfDocument.Open(@"C:\Users\Ryzen2600x\Downloads\2023-03-20_JPA_Invoice.pdf"))
    {
        foreach (Page page in document.GetPages())
        {
            IReadOnlyList<Letter> letters = page.Letters;
            string example = string.Join(string.Empty, letters.Select(x => x.Value));

            IEnumerable<Word> words = page.GetWords();

            IEnumerable<IPdfImage> images = page.GetImages();
        }
    }
    Console.WriteLine("Press Any key to continue");
    Console.ReadLine();
}

Sample Code to write pdf file

private static void Main()
{
    PdfDocumentBuilder builder = new PdfDocumentBuilder();

    PdfDocumentBuilder.AddedFont helvetica = builder.AddStandard14Font(Standard14Font.Helvetica);
    PdfDocumentBuilder.AddedFont helveticaBold = builder.AddStandard14Font(Standard14Font.HelveticaBold);

    PdfPageBuilder page = builder.AddPage(PageSize.A4);

    PdfPoint closeToTop = new PdfPoint(15, page.PageSize.Top - 25);

    page.AddText("My first PDF document!", 12, closeToTop, helvetica);

    page.AddText("Hello World!", 10, closeToTop.Translate(0, -15), helveticaBold);

    File.WriteAllBytes(@"C:\Users\Ryzen2600x\Downloads\Test.pdf", builder.Build());

    Console.WriteLine("Press Any key to continue");
    Console.ReadLine();
}