Text Find and Replace

VB C#

using IronPdf;

// Using an existing PDF
var pdf = PdfDocument.FromFile("sample.pdf");

// Parameters
const int pageIndex = 1;
const string oldText = ".NET 6"; // Old text to remove
const string newText = ".NET 7"; // New text to add

// Replace Text on Page
pdf.ReplaceTextOnPage(pageIndex, oldText, newText);

// Save your new PDF
pdf.SaveAs("new_sample.pdf");

Imports IronPdf

' Using an existing PDF
Private pdf = PdfDocument.FromFile("sample.pdf")

' Parameters
Private Const pageIndex As Integer = 1
Private Const oldText As String = ".NET 6" ' Old text to remove
Private Const newText As String = ".NET 7" ' New text to add

' Replace Text on Page
pdf.ReplaceTextOnPage(pageIndex, oldText, newText)

' Save your new PDF
pdf.SaveAs("new_sample.pdf")

Install-Package IronPdf

Text Find and Replace

You can find and replace text within a PDF using IronPDF's Replace.

How to Replace Text in PDF in C#

Install IronPDF C# library to replace text in PDFs
Load an existing PDF using the FromFile method in C#
Utilize the ReplaceTextOnPage method to replace text
Input page number, old, and new text to the method
Export the PDF file containing new text

using IronPdf;

class PdfTextReplacer
{
    static void Main()
    {
        // Load the PDF document from a file
        var pdfDocument = PdfDocument.FromFile("example.pdf");

        // Replace text on a specific page
        // Parameters: page number, text to find, replacement text
        pdfDocument.ReplaceTextOnPage(1, "old text", "new text");

        // Save the updated PDF to a new file
        pdfDocument.SaveAs("updated_example.pdf");

        // Notify the user
        Console.WriteLine("Text replacement complete. The updated PDF has been saved as 'updated_example.pdf'.");
    }
}

using IronPdf;

class PdfTextReplacer
{
    static void Main()
    {
        // Load the PDF document from a file
        var pdfDocument = PdfDocument.FromFile("example.pdf");

        // Replace text on a specific page
        // Parameters: page number, text to find, replacement text
        pdfDocument.ReplaceTextOnPage(1, "old text", "new text");

        // Save the updated PDF to a new file
        pdfDocument.SaveAs("updated_example.pdf");

        // Notify the user
        Console.WriteLine("Text replacement complete. The updated PDF has been saved as 'updated_example.pdf'.");
    }
}

Imports IronPdf

Friend Class PdfTextReplacer
	Shared Sub Main()
		' Load the PDF document from a file
		Dim pdfDocument = PdfDocument.FromFile("example.pdf")

		' Replace text on a specific page
		' Parameters: page number, text to find, replacement text
		pdfDocument.ReplaceTextOnPage(1, "old text", "new text")

		' Save the updated PDF to a new file
		pdfDocument.SaveAs("updated_example.pdf")

		' Notify the user
		Console.WriteLine("Text replacement complete. The updated PDF has been saved as 'updated_example.pdf'.")
	End Sub
End Class

$vbLabelText $csharpLabel

This code demonstrates how to replace text in a PDF file using the IronPDF library in C#. First, ensure you have the IronPDF library installed via NuGet. The code loads an existing PDF through the FromFile method, replaces text on the specified page using ReplaceTextOnPage, and saves the result as a new PDF file. The page number, text to replace, and new text need to be specified. Finally, the changes are saved with SaveAs, and a message is printed to confirm the operation is complete.

View on GitHub

Code

https://github.com/iron-software/IronPdf.Examples/tree/main/examples/csharp-replace-text-in-pdf

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