How to access and update each text fragment in PDF?

Aspose.PDF Product Family
1

Hi,

Using Aspose.PDF for .NET, I want to access each text fragment of a PDF document, whether it be a paragraph, text in a table, or captions, and then update the text based on some criteria and write back to the PDF in the same place. So the overall structure of the PDF remains same and I only access and update sentences of the document. Please tell me how I can do that and share some code sample.
Thanks

3

Hi, uax99!

Thank you for asking!

We recommend using TextFragmentAbsorber.
Here is an example of how to use this feature:

using Aspose.Pdf;
using Aspose.Pdf.Text;
using System;

namespace Documentation.Advanced.Working_with_Text
{
    internal class ForumExamples
    {
        public static void FindAllText()
        {
            // Open document
            Document pdfDocument = new Document(@"C:\Samples\Sample-Document-01.pdf");

            // Create TextAbsorber object to find text
            TextFragmentAbsorber textFragmentAbsorber = new TextFragmentAbsorber();

            // Accept the absorber for all the pages
            pdfDocument.Pages.Accept(textFragmentAbsorber);

            // Loop through the fragments
            foreach (TextFragment textFragment in textFragmentAbsorber.TextFragments)
            {
                // Print position
                // You can also use textFragment.Rectangle;
                Console.WriteLine(textFragment.Position);
                // Print content
                Console.WriteLine(textFragment.Text);
                // you can also use textFragment.Text ="Some value" for replacement

                // Print used font name
                Console.WriteLine(textFragment.TextState.Font.FontName);
            }
        }
    }
}

You can find other suitable examples in the section “Replace Text in PDF” of Documentation.