Conversion error: multi-page pdf to multiple single page png files, color unavailable

[rajibando]

ImageMagick version

8:6.9.11.60+dfsg-1.3+deb11u1

Operating system, version and so on

Official Debian GNU/Linux Live 11.6.0 lxde 2022-12-17T11:46

Description

Want to convert a multi-page text-only, formatted file, textfile.pdf into multiple page png files with Dark Blue texts. Used the following code (initial code line courtesy rich2005 of gimp-forum dot net):
convert -density 100 -colorspace sRGB -background none -fill 'rgb(0,0,139)' -quality 05 textfile.pdf imagecon/imagefile%03d.png
Output:

convert-im6.q16: profile 'icc': 'RGB ': RGB color space not permitted on grayscale PNG `imagecon/imagefile%03d.png' @ warning/png.c/MagickPNGWarningHandler/1668.

The png files that are produced are all with black pixels of characters.

One such png file, when opened with gimp, "GIMP Message" reports:

Execution error for procedure 'gimp-image-set-color-profile':
ICC profile validation failed: Color profile is not for grayscale color space

How to solve this issue and get output image files as desired?

Thanks and best wishes.

[urban-warrior]

Post a link to textfile.pdf so we can inspect it and determine the source of the issue.

[rajibando]

This link of the directory in the Google Drive, along with the concerned pdf file, the code-line and output error in the text file OutputError.txt, is here: https://drive.google.com/drive/folders/1eCa0OlXm-7g3Jlt4NYLmh0oiQlIGHjus ".png" files page-wise for all pages are produced, but in Black and White. One sample converted file in the imagecon sub-directory Best wishes, Rajibando

…

---------- Received message ---------- From: Cristy ***@***.***> Date: Tue, 04 Jul 2023 04:43:55 -0700 Subject: Re: [ImageMagick/ImageMagick] Conversion error: multi-page pdf to multiple single page png files, color unavailable (Discussion ImageMagick/ImageMagick#6457) To: ImageMagick/ImageMagick ***@***.***> Cc: rajibando ***@***.***>, Author ***@***.***> Post a link to `textfile.pdf` so we can inspect it and determine the source of the issue.

-- Reply to this email directly or view it on GitHub: https://github.com/ImageMagick/ImageMagick/discussions/6457#discussioncomment-6352776 You are receiving this because you authored the thread. Message ID: ***@***.***>

[urban-warrior]

Try this command:

convert -density 400 textfile.pdf -fill 'rgb(0,0,139)' -opaque black -resize 25% imagefile%03d.png

[rajibando]

Dear All concerned, Mr. Bob Friesenhahn, maintainer, graphicsmagick, has solved my query, suggesting two lines of codes, either of which worked as intended, and I have thanked him, in my post here: https://sourceforge.net/p/graphicsmagick/mailman/message/37865936/ The complete lines are as follows: convert -density 100 LoopEternal.pdf -colorspace Gray -colorspace rgb \ -fill blue -colorize 0/0/100 -transparent white +adjoin \ imagecon/image-%03d.png and convert -density 100 LoopEternal.pdf -colorspace Gray -colorspace rgb \ -fill blue -colorize 0/0/100 -fuzz 1% -transparent white +adjoin \ imagecon/name-%03d.png They work as intended. I have requested his advice on implementing my colour choice: The identifier for Dark Blue: PMS: 3591 C Hex Color: #06038D; RGB: (3,37,126) CMYK: (100,87,0,25) I am sharing the lines for common empowerment. Best wishes, Rajib Etc.

[fmw42]

You should be using -colorspace sRGB in Imagemagick not -colorspace RGB

[rajibando]

I am extremely sorry and profusely apologise for posting my reply while you sent yours. Your line works as intended. With the colour requested. So thank you indeed, Mr. Cristy, and best wishes, Rajibando Etc.

…

---------- Received message ---------- From: Cristy ***@***.***> Date: Tue, 04 Jul 2023 07:27:14 -0700 Subject: Re: [ImageMagick/ImageMagick] Conversion error: multi-page pdf to multiple single page png files, color unavailable (Discussion ImageMagick/ImageMagick#6457) To: ImageMagick/ImageMagick ***@***.***> Cc: rajibando ***@***.***>, Author ***@***.***> Try this command: ``` convert -density 400 textfile.pdf -fill 'rgb(0,0,139)' -opaque black -resize 25% imagefile%03d.png ``` [ ... ] Message ID: ***@***.***>