ReduceFileSize(Tr圜ast(shape, ShapeCollection), dpi)ĭim downScaled As ImageShape = downScale(Tr圜ast(shape, ImageShape), dpi)ĭim textShape As TextShape = Tr圜ast(shape, TextShape)ĭim fontName = If(Not String.IsNullOrEmpty(), (), If(Not String.IsNullOrEmpty(), (), String.Empty))ĭim subsetted As = .Create('Arial', False, False) Private Sub reduceFileSize(shapes As ShapeCollection, dpi As Integer) TextShape textShape = shape as TextShape ImageShape downScaled = downScale(shape as ImageShape, dpi) ReduceFileSize(shape as ShapeCollection, dpi) Text shapes that use an Arial font get modified to refer to a subsetted Arial font.Ĭopy static void reduceFileSize(ShapeCollection shapes, int dpi).Image shapes get replaced by a new image shape with a lower resolution.It inspects each shape on a page, and replaces some of them by a modified shape: The most interesting part of the sample that you will find attached is the code below. PDFKit.NET can do the same, via the Page.CreateShapes() method. Fully embedded fonts get replaced by a subsetted font.Large images get subsampled at a much lower resolution.Close inspection of the result reveals that Adobe Acrobat does 2 things for this document: See the PDF file included in the downloads of this article. This option can be found in a submenu under File – Save As… For some PDF files this results in a remarkable reduction in size. Adobe AcrobatĪdobe Acrobat has an option to save PDF files with a reduced size. Note: For small PDF documents, the size may actually increase. This article shows how to reduce pdf file size with PDFKit.NET. Adobe Acrobat has an option to save a document with a reduced size.

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