Legacy ImageMagick Discussions Archive

Good news! I was finally able to convert a PDF to a usable TIFF using a current version of ImageMagick (6.9.3-0)! Here is the updated command: convert -density 500 -units PixelsPerInch ACBYX.pdf[0] -background white -alpha remove -define white-point=0x0 -resize 4125x5338 -monochrome -compress Group4 ...

@dlemstra that did the trick! I added the -define before my -resize and Chromaticity is gone and my crummy old software now happily consumes the TIFF files generated by ImageMagick. Thanks!

It's a (very) old version of Exstream Dialogue. It's proprietary software, and I'm sure our version of it is far past EOL. I'm trying to figure out if we can modernize/replace it, but that process is going to take a while.

Thanks again, Fred! This is some of the best OSS community support I've ever experienced :-) I posted in Developers here: http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=29009. We should probably continue the discussion there to avoid forking it. But I wanted to answer your question ...

Hi, folks! Thanks for all of your hard work on ImageMagick!!! I'm using ImageMagick to convert PDFs to TIFFs as part of a pre-print process. Starting with version 6.9.1.2, `convert` does not generate files that my (very picky, legacy) software can use. The only correlated difference I can see with ...

6.9.0-10 is the version. We're using the same version, but I was pointing out that you were checking for Chromaticity on the original PDF, whereas I am interested in whether Chromaticity is included on the TIF generated from the PDF. It doesn't matter to me whether the PDF has the Chromaticity or not.

Fred, thanks for checking that. I also get the Chromaticity when I run identify on the PDF with 6.9.0, but I don't see Chromaticity on the converted TIFF with 6.9.0. 6.9.0 manages to remove it, whereas the later versions leave it in place. I'm using the same version of Ghostscript in all cases (9.15 ...

Fred, you're the best! You can download the PDF from http://singlebrook.com/system/resources ... /ABSYX.pdf

I tried adding `-strip` after the `ABSYX.pdf[0]`, but that did not change anything. Chromaticity still stubbornly shows up.

6.9.1-10 doesn't work for me either. That narrows things down a bit, but I don't see any obvious culprits in the changelog between 6.9.0-10 and 6.9.1-10.

Yeah, I should have mentioned that I checked the changelog. I saw a few TIFF-related items, but nothing that seemed obviously related to my issue.

So this was working great with ImageMagick 6.9.0-10. In trying to get another person set up to do these conversions, we found that TIFFs generated using 6.9.2-10 do not work, and they include the Chromaticity section that we had successfully gotten rid of before. `identify -verbose` output from 6.9 ...

Yes! Win! Thanks, Fred!!! That did the trick! The old, crusty PDF generator I'm using now happily incorporates these TIFF files :-) convert -density 500 -units PixelsPerInch ACBYX.pdf[0] -background white -alpha remove -resize 4125x5338 -monochrome -compress Group4 ACBYX.tif (I also had to remove ...

Thanks, @fmw42. The PDF actually contains mostly text, so there's no image for me to extract. I'm using ghostscript (automatically via ImageMagick) to render the text to an image.

Hi! I'm converting one-page PDFs to TIFF files, and the tool that consumes the TIFFs is *very* picky about its input. The TIFF I'm creating is being rejected by this tool with the spurious error message: TIFF is not uncompressed 1 bit or compressed using CCITT G4. File is ignored. I say this message ...