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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A request from a friend made me face the problem of converting a color PDF into a grayscale one. Searching the web provided some ways of doing so with Adobe Acrobatvia some obscure menu item somewhere. However, the very same operation could be undertaken hrayscale free tools, such as ghostscript. Assuming we have a file called color. I prefer the above to YANUB’s vhostscript below in red what he lacks, in blue what I lackbecause a shell operation is substituted by some option s of the command we are running:.
A sample Perl script to alleviate the tedious writing above:.
Assuming we call the Perl script “togray. Great post and it also works in Windows with Ghostview http: This command let you remove the white spaces around the picture introduced with the previous command: The standard output file name is grayscale-crop.
I searched for such a solution for a long time: I am going to add the whole grayscalee to Goggle Knol, obviously citing this webpage: I hope it is convenient for you! The contents of my blog are licensed under a Creative Commons license ups, I gratscale I had a tag somewhere, but now I only see the “Copyright c handyfloss ” at the bottom.
I’ll add a CC tag some dayand you may use them any way you see fit, provided that you cite the source, and you make no commercial use of it. So, yes, putting it in Knol is fine with me. Actually I find it very flattering and undeserved.
[gs-bugs] [Bug ] – Ghostscript – Command line print in silent producing grayscale output
Well, this is the link: It is not flattering nor undeserved: I only think it could be useful it was for me to publish this with the correct references. I was eager to try this Google Knol.
Hi, thanks for the script, but it doesn’t work for me. I have a PDF obtained from scanning a paper doc. Each page is composed of a single, full-page embedded jpeg color image. I still haven’t found a way to convert that file to grayscale without resorting to manual, single-image conversion. Now it works like a charm, thank you!! Black pixels rather vectors should remain black and everything that is not purely black should disappear i.
Ghostscriipt following link refers to similar ideas: Could any of you gurus help me and provide a proper ghostscript command line that does the desired job? Sorry Michael, I don’t know how to help you.
The thread you link to ghosgscript a couple of interesting solutions. I understand that they didn’t work for you, in which case I really don’t have further ideas even the ones in that thread were above me. This hint was very usefull to me, thanx a lot! GS does the magic that corel and cs5 denied to me due to a obscure “host application error.
This code works fine for major cases see http: It strikes me as funny, since gs should also handle PDFs! It seems work much better and faster, and works for images, too. Thanks, your warning is so true! However, it a PDF without a.
[gs-bugs] [Bug 697411] – Ghostscript – Command line print in silent producing grayscale output
Is it possible to modify the pearl script that I can use it for a bunch of pdf files and don’t have to type in every single pdf file in a folder maybe including subfolders? I tried the command and the file size is not really smaller max. The following Python script will convert all PDF files in a directory into grayscale, if called from within that directory:.
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Making a PDF grayscale with ghostscript | handyfloss
Notify me of followup comments via e-mail. Subscribe without commenting E-Mail: The only thing that I had to change was the exe. Hello, this is very ghostsscript I just have to add a couple of commands to go back to the EPS format without loss of quality. Thanks CC, The grayecale of my blog are licensed under a Creative Commons license ups, I thought I had a tag somewhere, but now I only see the “Copyright c handyfloss ” at the bottom.
Makes my live a lot easier when writing my thesis.
Making a PDF grayscale with ghostscript
Many thanks in advance Michael. Hi just what I want to do, but I get the error below. And I can’t figure out whats wrong.
Hi hyangyt, I can’t really help you. Hi, I found a way to do it, please see my post: Hi jan, Thanks, your warning is so true! Hey, first of all: The following Python script will convert all PDF files in a directory into grayscale, if called from within that directory: Leave a Reply Cancel reply Your email address will not be published.