PdfCompressor Class


PdfCompressor Class

This class can be used to compress an existing PDF document.

Inheritance Hierarchy

SystemObject
SelectPdf.ExtrasPdfManager
SelectPdf.CompressorPdfCompressor

Namespace: SelectPdf.Compressor
Assembly: Select.Pdf.Extras (in Select.Pdf.Extras.dll) Version: 26.2

Syntax

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public class PdfCompressor : PdfManager

Public Class PdfCompressor
	Inherits PdfManager

The PdfCompressor type exposes the following members.

Constructors

	Name	Description
	PdfCompressor	Instantiates the PdfCompressor object.

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Properties

	Name	Description
	DocumentInformation	PDF document information. Most of this property info is populated after Load. Some info is populated after Save. (Inherited from PdfManager)
	ImagesCompressionEnabled	Gets or sets a flag indicating if the images compression is enabled or not for the images in the pdf document.
	ImagesCompressionLevel	Gets or sets the compression level of images in the generated pdf document. This is a value between 0 - no compression, 100 - best compression.
	RemoveDuplicateFonts	Gets or sets a flag indicating if the duplicated fonts are removed or not from the pdf document.
	RemoveUnusedFontGlyphs	Gets or sets a flag indicating if the unused font glyphs are removed or not from the pdf document.
	StreamsCompressionLevel	This property controls the compression level of the pdf document.
	StructureCompressionEnabled	Gets or sets a flag indicating if the full compression is enabled or not for the pdf document.

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Methods

	Name	Description
	Close	Closes the opened pdf document. (Inherited from PdfManager)
	Load(Byte)	Loads a pdf document from a byte array. (Inherited from PdfManager)
	Load(Stream)	Loads a pdf document from the specified stream. (Inherited from PdfManager)
	Load(String)	Loads a pdf document from an existing pdf file. (Inherited from PdfManager)
	Load(Byte, String)	Loads a password protected pdf document from a byte array. (Inherited from PdfManager)
	Load(Stream, String)	Loads a pdf document from a stream containing a password protected pdf document. (Inherited from PdfManager)
	Load(String, String)	Loads a pdf document from an existing password protected pdf file. (Inherited from PdfManager)
	Save	Saves the pdf document as byte array. (Inherited from PdfManager)
	Save(Stream)	Saves the pdf document to the specified stream. (Inherited from PdfManager)
	Save(String)	Saves the pdf document to the specified file. (Inherited from PdfManager)

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Example

The following sample code shows how to use PdfCompressor class to compress an existing PDF document.

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// existing PDF document
string file = @"C:\path\to\document.pdf";

// load existing file
SelectPdf.Compressor.PdfCompressor compressor = new SelectPdf.Compressor.PdfCompressor();
compressor.Load(file);

// set compression options
compressor.StreamsCompressionLevel = SelectPdf.Compressor.PdfCompressionLevel.BestCompression;
compressor.StructureCompressionEnabled = true;
compressor.RemoveDuplicateFonts = true;
compressor.RemoveUnusedFontGlyphs = true;
compressor.ImagesCompressionEnabled = true;
compressor.ImagesCompressionLevel = 20;

// save compressed document
compressor.Save(file + "-compressed.pdf");

' existing PDF document
Dim file As String = "C:\path\to\document.pdf"

' load existing file
Dim compressor As SelectPdf.Compressor.PdfCompressor = New SelectPdf.Compressor.PdfCompressor()
compressor.Load(file)

' set compression options
compressor.StreamsCompressionLevel = SelectPdf.Compressor.PdfCompressionLevel.BestCompression
compressor.StructureCompressionEnabled = True
compressor.RemoveDuplicateFonts = True
compressor.RemoveUnusedFontGlyphs = True
compressor.ImagesCompressionEnabled = True
compressor.ImagesCompressionLevel = 20

' save compressed document
compressor.Save(file & "-compressed.pdf")

Reference

SelectPdf.Compressor Namespace