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")