Change PDF to PDF/A and set color space

To save your archival documents for long time, you’d better convert the original document of PDF to PDF/A document which is independent of external information. There is a special application designed for converting PDF to PDF/A named as PDF to PDF/A Converter. It also supports to set several parameters for the target file. For example, if you want to set color space for output PDF/A document, it can help you.

The color space plays an important role in people’s daily life. The printer may use a combination of Cyan, Magenta, Yellow and Black ink, all of which are also called as CMYK when it prints documents or images. Digital cameras and computer monitors need to use Red, Green and Blue light, all of which are also short as RGB that you hear of often.

The command line application PDF to PDF/A Converter supports three kinds of color space: RGB, CMYK and GRAY. In this article, you will see how to set color space in a command line and you just need to input the commands in MS-DOS prompt window.

At first, you should download the command line application at for getting the free trial version. You need to unzip the file to the disk of your computer and then the executable file pdf2pdfa.exe will be available at once.

The whole conversion is consisted of three steps and please see the following contents about it.

The first step is to open MS-DOS interface for inputting the command line in it. There are two ways to open the interface. The first one is to click “Start”—“Run” to open “Run” dialog box and input “cmd” in “Open” combo box. Then please click “OK” button. The second way is to use the hot key “Window”+ “R” to open “Run” dialog box.

The second step is to input the command line. The command line includes called program, parameter for setting color space, source file and target file. If you want to know it clearly, please see the following example:

pdf2pdfa.exe –cl 0 C:\input.pdf C:\output.pdf

In the command line,

pdf2pdfa.exe stands for the called program and you need to use its path in the command line.

–cl 0 is for using RGB ICC profile for device-specific color spaces. The number can also be changed as “1” or “2”, which are to use CMYK ICC profile or GRAY ICC profile for device-specific color spaces.

C:\input.pdf stands for the path of source file.

C:\output.pdf stands for the path of target file.

In the end of the conversion from PDF to PDF/A, you need to click “Enter” button to run the conversion.

If you want to buy the application, you can visit its homepage: where there are more information about PDF to PDF/A Converter.

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