RGB and CMYK are two different colour schemes. The range of colours available in a scheme can improve the sharpness and colour accuracy in a picture. RGB contains only three colours: red, green and blue, and creates a variety of colours by combining them. CMYK is a format that achieves different colours by combining cyan, magenta, yellow and black. This is a scheme commonly used offset printing. If you have a picture stored in the RGB format, you can easily change the colour scheme for CMYK printing by using Adobe Acrobat Pro’s features.
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Open Adobe Acrobat Pro. Click on “File” and then select “Open from the File menu. Navigate to the location of the file you want to alter and open it.
Click on “Tools” in the menu bar. Select “Print Production” and then “Convert Colours.” This will open the “Convert Colours” window. Leave most of the values in this window as they are. You will only change the values in the “Output Intent” section.
Check the “Convert Colours to Output Intent” and select “Photoshop 5 Default CMYK” in the “Profile” drop-down list. Leave the “All” pages radio button active.
Click the “OK” button to close the window. Click on “File” in the menu file and the select “Save As.” Save the file with a different name to avoid overwriting the original.
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