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   Collapse AllThis property gets or sets the value indicating whether PDF page streams are compressed or not.
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| CompressionType Compression { get; set; } |
Value
Remarks
A compressed file is always smaller; however, it contains binary data rather than ASCII data. In addition, "run-length" compression (uncompressed file) is compatible with older PDF reader programs.
You can also reduce output file size by setting the FontEmbedStyle property to esNotEmbed.
Example
How to Compress the Document
Delphi
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{ PDF object is supposed to be created }
PDF.Compression := coFlate;
{ the size of the PDF file generated would be: }
{ about 7 Kb if Compression = ctFlate (1) }
{ about 13 Kb if Compression = ctNone (0) }
font := PDF.AddFont('Verdana', false, false, false, false, fcDefault);
PDF.UseFont(font, 8);
line := 'This is a long text line. This is a long text line.';
for i := 1 to 100 do
PDF.ShowTextAt(10, i*10, line);
PDF.SaveToFile("test.pdf", true);
C/C++
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// PDF object is supposed to be created
PDF->Compression = coFlate;
// the size of the PDF file generated would be:
// about 7 Kb if Compression = ctFlate (1)
// about 13 Kb if Compression = ctNone (0)
long font = PDF->AddFont("Verdana", false, false, false, false, FontCharset.fcDefault);
PDF->UseFont(font, 8);
char* line = "This is a long text line. This is a long text line.";
for (int i = 0; i < 100; i++)
PDF->ShowTextAt(10, i*10, line);
PDF->SaveToFile("test.pdf", true);
C#
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// PDF object is supposed to be created
PDF.Compression = CompressionType.coFlate;
// the size of the PDF file generated would be:
// about 7 Kb if Compression = ctFlate (1)
// about 13 Kb if Compression = ctNone (0)
long font = PDF.AddFont("Verdana", false, false, false, false, FontCharset.fcDefault);
PDF.UseFont(font, 8);
string line = "This is a long text line. This is a long text line.";
for (int i = 0; i < 100; i++)
PDF.ShowTextAt(10, i*10, line);
PDF.SaveToFile("test.pdf", true);
Visual Basic
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' PDF object is supposed to be created
PDF.Compression = 1 'coFlate
' the size of the PDF file generated would be:
' about 7 Kb if Compression = ctFlate (1)
' about 13 Kb if Compression = ctNone (0)
font = PDF.AddFont("Verdana", False, False, False, False, 1) 'fcDefault
PDF.UseFont font, 8
line = "This is a long text line. This is a long text line."
For i = 1 To 100
PDF.ShowTextAt 10, i*10, line
Next
PDF.SaveToFile "test.pdf", true
See Also
Reference