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How to reduce memory usage while merging PDF documents

Platform: WinForms |
Control: PDF |
Published Date: January 25, 2016 |
Last Revised Date: January 24, 2020
Tags: pdf, merge, merging

The memory usage can be reduced by using EnableMemoryOptimization property. Please find the code example and sample below for the same.

//Input PDF documents.
string[] inputDocuments = Directory.GetFiles(@"..\..\Data\","*.pdf");
//Create a new instance.
PdfDocument document = new PdfDocument();
//Optimize memory while merging PDF documents.
document.EnableMemoryOptimization = true;
//Iterate input PDF documents.
foreach (string inputDocument in inputDocuments)
//Loads PDF document in order to merge.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputDocument);
loadedDocument.EnableMemoryOptimization = true;
//Merge loaded document contents to the parent PDF document.
document.ImportPageRange(loadedDocument, 0, loadedDocument.Pages.Count - 1);
//Close the document.
//Save and close the document.


Sample Link:




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