The issue when converting a PDF to true grayscale. At the (change shape SVG after processing through ghostscript command of. A bit late in the day, but the top answer doesn’t work for me with a different file. The underlying problem appears to be old code in Ghostscript, for which there is a. ?id= Bug ID: Summary: Command line print in silent producing grayscale output.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’m trying to convert to grayscale this PDF: I’m able to convert it through an intermediary ps file using gs, pdftops v 0. I tryed a lot of other things: The only one solution I found which is not suitable for me in production environment is to use Preview on my Mac and apply a Quartz Gray Tone filter manually or with an Automator script. Anyone find another working way to do it?

Or is it possible to normalize the PDF or fix the issue to prevent the Ghostscript message “Unable to convert color space A bit late in the day, but the top answer doesn’t work for me with a different file. The underlying problem appears to be old code in Ghostscript, for which there is a later version that is not enabled by default.

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[gs-bugs] [Bug ] – Ghostscript – Command line print in silent producing grayscale output

More on that here: If you crack into the file, you’ll find that most of the colors are determined through an RGB ICC based color space look for 8 0 R to find all the references to this colorspace.

Perhaps gs is complaining about that? It’s certainly doable, but the process is nearly the same garyscale rendering but with some fairly special-purpose code.

You can use something which I created. It gives you the option to choose the specific page numbers that you want to convert to grayscale.

Making a PDF grayscale with ghostscript

Handy if you don’t want to grayscale the entire pdf. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

How to convert a PDF to grayscale from command line avoiding to be rasterized? Panda 85 1 1 7.

Amazing, it works like a charm! Grayscael gives this output and the PDF is still colored. Unable to convert color space to Gray, reverting strategy to LeaveColorUnchanged.

[gs-bugs] [Bug 697411] – Ghostscript – Command line print in silent producing grayscale output

This isn’t real grayscale. If I print out the ink converage it is using C, M, and Y to make gray. Reuben Thomas 4 8.

KenS 22k 1 21 Phyast10 94 1 It converts vectors to raster images. Install pdftk apt-get install pdftk Once you have installed pdftk, save the script as graypdf.

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Making a PDF grayscale with ghostscript | handyfloss

I don’t know of a neat automatic conversion to monochrome there might be such graysale thing although there was something in Tugboat a while back about mapping colors on the fly. I would probably make monochrome versions of the pictures, and name them consistently. Then conditionally load each one” http: The GEX Model grayscake http: Salvi Pascual 1, 12 This appears to not be real grayscale.

If I run inkcov on it, it is using C, M, and Y to make gray. Shoaib Khan 73 1 9.

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