Product Information:

ImageMagick Vers : ImageMagick-6.8.6

Operating System : RHEL 6.4.

We are using ImageMagick in our CMS application to convert eps files to png files. But the script is not able generate thumbnails while converting. Our application is running on a Linux system.

When we run the identify command on one such file, we get the following:

# identify tmp/ADVAIR_DISKUS_250.eps
identify: no decode delegate for this image format `tmp/ADVAIR_DISKUS_250.eps' @ error/constitute.c/ReadImage/552

Can some one suggest how to address this issue?

  • 1
    Would you elaborate? Imagmagick convert is great at producing thumbnails.
    – rickhg12hs
    Nov 20, 2013 at 17:15
  • We have integrated imagemagic tool to our CMS application i.e Adobe CQ.This conversion is done part of workflow.When we are uploading any eps file which coverts the eps file to png file.Coversion is happening but not able to view the thumbnail for the converted eps file. Our application is running on linux operating system.And also we have tested the same in windows operating system ,it's working fine.When we run command-identify tmp/ADVAIR_DISKUS_250.eps identify: no decode delegate for this image format `tmp/ADVAIR_DISKUS_250.eps' @ error/constitute.c/ReadImage/552.
    – user52746
    Nov 20, 2013 at 17:32
  • 1
    This question appears to be off-topic because it is about a proprietary CMS.
    – jasonwryan
    Nov 21, 2013 at 0:34
  • @jasonwryan I disagree. The origin of the issue may be proprietary software, but the output he provided is the result of a regular imagemagic command (identify).
    – phemmer
    Nov 21, 2013 at 4:02
  • 1
    @jasonwryan except this is a question about imagemagick, which can pertain to any use of imagemagick, not just with the CMS. Thus the answer will benefit the community. Are you saying we shouldn't support anyone with RedHat because they have RedHat support? If the question had been "Why do I get this error when using identify?" and didn't mention the CMS at all, would you still refuse to help?
    – phemmer
    Nov 21, 2013 at 14:44

2 Answers 2


The following commandline should do the job:

convert -thumbnail 200x200 test.eps test.png

Check the folders, if you are allowed to write into.

  • this issue is occurring for some of the eps file but not all.And also we are able to covert and see the thumbnails using the command covert test.eps test.png. Could you please tell what is the difference in usage of this command?
    – user52746
    Nov 20, 2013 at 18:52
  • This command creates a thumbnail of a certain size (200 x 200 in my example). Like @cjm I think, that you have some EPS-files, that can't be read by convert. Think about using ps2ps (if you are on a Linux system). It might help you.
    – user14769
    Nov 21, 2013 at 11:45

ImageMagick depends on Ghostscript to read EPS images. The error "no decode delegate for this image format" suggests you don't have Ghostscript installed on your Linux system, or your ImageMagick was built without Ghostscript support for some reason.

  • Actually we are not seeing this for all the eps files for some of them only this issue we are seeing.And also we have tried the same in windows and it's working without any issue.And also, can we install ghost script separately in our linux environment and then imagicMagick work without any problem?
    – user52746
    Nov 20, 2013 at 19:35
  • @user52746 there are multiple types of eps files (eps, eps2, eps3, epsf, epsi, ...). Likely its failing for some and not others because they're different types of eps files, and your ghostscript doesn't know how to process some of those types.
    – phemmer
    Nov 21, 2013 at 4:00

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