Removing attachment from an existing PDF using Aspose.PDF for .NET

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Aspose.PDF can remove attachments from PDF files. A PDF document’s attachments are held in the Document object’s EmbeddedFiles collection.

To delete all attachments associated with a PDF file:

  1. Call the EmbeddedFiles collection’s Delete method.
  2. Save the updated file using the Document object’s Save method.

The following code snippet shows how to remove attachments from a PDF document.

// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_Attachments();

// Open document
Document pdfDocument = new Document(dataDir + "DeleteAllAttachments.pdf");

// Delete all attachments
pdfDocument.EmbeddedFiles.Delete();

dataDir = dataDir + "DeleteAllAttachments_out.pdf";

// Save updated file
pdfDocument.Save(dataDir);