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Convert pgn file from rgb to cmyk php

Posted on 2003-12-02
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Last Modified: 2012-05-04
hello i want some help about how can i convert a png file, i have my develop on php i want to create a pdf but i have all my images in rgb now i want to convert my png file to a cmyk on the fly to get my pdf in cmyk does anybody can helpo me pls
i need this help
thanks :'(
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Question by:Unksoc
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weed earned 125 total points
ID: 9863505
You SURE you want to use CMYK? There is absolutely NO reason to use CMYK unless youre going to certain high end printers. Other printers prefer to do the conversion themselves, on the fly. I'd say leave it as RGB.
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by:Unksoc
ID: 9866831
Yes i know, thats what i want to do this conversion, coz im gonna use the pdf generated to print, thats why i need to make a conversion of that kind, hope can help
Thanks
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by:weed
ID: 9867117
Well, if your image is currently PNG, simply converting it to CMYK probably isnt going to make it suitable for printing on the kind of printer that would require CMYK. There are other things like DPI and color management to be concerned about.
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Author Comment

by:Unksoc
ID: 9867159
ok i understand that, but d ou know some way to do it?, coz i made one conversion but im trying to get a program that could do it in automatic or i mean that u can use a dll or something like that, not like photoshop
Thanks for help
Regards
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by:weed
ID: 9867359
Why not photoshop? That's certainly the easiest. BTW, you already accepted an answer to this question. Not sure why.
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by:Unksoc
ID: 9867397
Not photoshop, coz im using a PDflib with php to get the pdf, but that one goes with php then i need to use some kinda standalone soft to do that
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by:PrepressSuperstar
ID: 9872729
1. First... weed is right, you "accepted" his answer.

2. Second... To give you the best answer, what is the intention? Is the file intended to be printed on a modern printing press? If yes, then CMYK is the correct "mode". If the intention is for viewing, or an inkjet printer... then RGB would be the best bet.

3. To help you resolve your issue it is difficult with the limit of information provided (platform, intentions, applications used) so the recommendation of Photoshop is just one possible solution, but i know there are a number of applications available but which one is appropriate? I think you should evaluate number 2 above!
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Expert Comment

by:PrepressSuperstar
ID: 9872730
1. First... weed is right, you "accepted" his answer.

2. Second... To give you the best answer, what is the intention? Is the file intended to be printed on a modern printing press? If yes, then CMYK is the correct "mode". If the intention is for viewing, or an inkjet printer... then RGB would be the best bet.

3. To help you resolve your issue it is difficult with the limit of information provided (platform, intentions, applications used) so the recommendation of Photoshop is just one possible solution, but i know there are a number of applications available but which one is appropriate? I think you should evaluate number 2 above!
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