The PDF2JPEG function converts a PDF document to a JPEG document.
This method needs special license. Please, contact our Sales Department for more information
long PDF2JPEG( LPCSTR InputFile, LPCSTR Password, LPCSTR OutputFile, long Options, long OptimizeLevel )
InputFile
Full path of PDF file to convert to TIFF.
Password
Password, if any, needed to open the PDF file.
OutputFile
Full path of resulting Tiff file.
Options
JPeg generation options. The Options value is a combination of the Image Resolution in the HIWORD and the Jpeg Compression Level (1-9) in LOWORD (Resolution << 16 | Compression).
OptimizeLevel
Optimization level to apply to PDF document before exporting to Jpeg..
Optimizing the document is not recommended when exporting to image formats, it slows down the export and the output might be less accurate.
Optimization Level |
Value |
Description |
|---|---|---|
No optimization |
0 |
Recommended when exporting to JPEG and Tiff formats. |
Line optimization |
1 |
Recommended when exporting to RTF format. |
Paragraph optimization |
2 |
Recommended when exporting to HTML format. |
Table optimization |
3 |
Recommended when exporting to Excel format. |
The return value is True if the document was converted, False otherwise.
When the PDF document consists of multiple pages, one JPeg file is generated for every page with the page index appended to the supplied file name.
A JPeg compression level of 0 produces uncompressed 24-bit bitmaps. The file extension should be set to .bmp in this case.
There are some predefined values for the Options parameter:
DLL Constants |
Value (Hex) |
Value (Dec) |
Notes |
|---|---|---|---|
JPEGOPTION_DEFAULT |
0x012C0007 |
19660807 |
300 DPI, JPeg level 7 |
JPEGOPTION_LOW |
0x00960003 |
9830403 |
Low resolution 150 DPI, JPeg level 3 |
JPEGOPTION_MEDIUM |
0x012C0007 |
19660807 |
300 DPI, JPeg level 7 |
JPEGOPTION_HIGH |
0x02580009 |
39321609 |
High resolution 600 DPI, JPeg level 9 (could be very slow) |
(*) NOTE: Converting from HEX DWORD, unsigned and 32-bit unit of data
// PDF Converter Cpp.cpp : Defines the entry point for the console application.
//
#include <Windows.h>
#include <string>
#include <iostream>
#include "CdIntf.h"
#pragma comment (lib, "CDIntf.lib")
using namespace std;
enum OPTIMIZE
{
NO_OPTIMIZATION = 0,
LINE_OPTIMIZATION = 1,
PARAGRAPH_OPTIMIZATION = 2,
TABLE_OPTIMIZATION = 3
};
int main()
{
// Constants for Activation codes
#define strLicenseTo "Amyuni PDF Converter Evaluation"
#define strActivationCode "07EFCDAB0100010025AFF1801CB9441306C5739F7D452154D8833B9CECBA2ADE79E3762A69FFC354528A5F4A5811BE3204A0A439F5BA"
// The SetLicenseKey method should be called after creating an object of type
// CDIntfEx.Document to activate the advanced methods that require the object
// activation code to work properly
SetLicenseKeyA(strLicenseTo, strActivationCode);
// Convert PDF to JPEG image
LPCSTR passWord = NULL;
long resolution = 300;
long compression = 7;
PDF2JPEG( "c:\\temp\\test.pdf", passWord, "c:\\temp\\test.jpg", resolution << 16 | compression, OPTIMIZE::NO_OPTIMIZATION);
// or
PDF2JPEG( "c:\\temp\\test.pdf", passWord, "c:\\temp\\test2.jpg", JPEGOPTION_MEDIUM, OPTIMIZE::NO_OPTIMIZATION);
return 0;
}