How to remove metadata from a PDF using C# and VB.NET?
Syncfusion Essential PDF is the .NET PDF library used to create, read, and edit PDF documents. Using this library, you can remove the XMP metadata from existing PDF documents.
Steps to remove metadata from the PDF document programmatically:
- Create a new C# console application project.
- Install the Syncfusion.Pdf.WinForms NuGet package as a reference to your .NET Framework applications from NuGet.org.
- Include the following namespaces in the Program.cs file.
C#
using Syncfusion.Pdf; using Syncfusion.Pdf.Parsing;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Parsing
- Use the following C# or VB.NET code snippet to remove the XMP metadata from the PDF document.
C#
// Load the existing PDF document
PdfLoadedDocument ldoc = new PdfLoadedDocument("../../input.pdf");
// Create a new PdfCompressionOptions instance
PdfCompressionOptions options = new PdfCompressionOptions();
// Set RemoveMetadata to true
options.RemoveMetadata = true;
// Set the compression option to the PDF document
ldoc.CompressionOptions = options;
// Save the PDF document
ldoc.Save("output.pdf");
// Close the document
ldoc.Close(true);
VB.NET
'Load the existing PDF document
Dim ldoc As New PdfLoadedDocument("../../input.pdf")
'Create a new PdfCompressionOptions instance
Dim options As New PdfCompressionOptions()
'Set RemoveMetadata to true
options.RemoveMetadata = True
'Set the compression option to the PDF document
ldoc.CompressionOptions = options
'Save the PDF document
ldoc.Save("output.pdf")
'Close the document
ldoc.Close(True)
The complete working sample can be downloaded from RemoveMetadata.zip
Take a moment to peruse the documentation, where you can find other options like compressing image, font, and page objects in an existing PDF document.
Refer here to explore the rich set of Syncfusion Essential PDF features.
An online sample link to compress the existing PDF document.
Starting with v16.2.0.x, if you reference Syncfusion assemblies from a trial setup or from the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion license key in your application to use the components without a trial message.
