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Main Forums => The Roundtable => Topic started by: StopTheGrays on November 15, 2005, 06:46:06 AM

Title: Adobe Professional-Converting ?
Post by: StopTheGrays on November 15, 2005, 06:46:06 AM

Is there a way in Adobe Professional 7 to convert a color scan PDF to a B&W PDF file? TIA

Title: Adobe Professional-Converting ?
Post by: charby on November 15, 2005, 06:52:55 AM

open the .pdf up

nake sure the acrobat window is active

press alt and prt scr

open up photoshop

choose new file

then paste

crop what you need

convert to greyscale

save as a jpg

open up acrobat professional

convert the jpg to .pdf

unless you have the file the .pdf was created from you can't modify it.

Charby

Title: Adobe Professional-Converting ?
Post by: Zundfolge on November 15, 2005, 03:10:58 PM

Easier way to do it within Acrobat Pro 7:

Open PDF

In "Tools" menu, go to "Print Production" then "Convert Colors"


If there are any spot colors in the file you'll need to go to Tools-Print Production-Ink Manager and check "Convert all spots to process"

Title: Adobe Professional-Converting ?
Post by: Harold Tuttle on November 15, 2005, 04:17:31 PM

use photoshop to open & rasterize the .pdf into a greyscale color space

Title: Adobe Professional-Converting ?
Post by: Zundfolge on November 15, 2005, 06:04:07 PM

Harold's way works well too since Photoshop will open .pdf files just fine (be careful with the resolution though, if you want it to remain high make sure you set the DPI to 300 when you open it)  However if you have type and vector objects you want to remain type and vector you want to stay away from Photoshop.

Charby's method ... well thats a lot more work then necessary ... plus JPEG compression degrades the image.

Title: Adobe Professional-Converting ?
Post by: Zundfolge on November 15, 2005, 06:39:30 PM

Quote from: charby

unless you have the file the .pdf was created from you can't modify it.

Thats not 100% accurate

with Acrobat Pro, you can do some limited editing to any PDF (unless the security settings forbit it).

If you have Adobe Illustrator, you can open a PDF and edit it quite extensivly.

Plus there are some other 3rd party programs that can hack PDFs to various degrees.