ImageMagick: Error while running convert: convert: unable to read font

Question

I'm on Mountain Lion and installed ImageMagick using Homebrew (minimagick is also in my Gemfile but I don't think that's relevant). SimpleCaptcha uses it in a Rails app to create CAPTCHAs.

However, the image isn't created cause of this error:

Error while running convert: convert: unable to read font `/usr/local/share/ghostscript/fonts/n019003l.pfb' @ error/annotate.c/RenderFreetype/1123.
convert: Postscript delegate failed `/var/folders/gd/n7rzfhkd5jd0ws8jnzsz34hr0000gn/T/magick-vzHHz4ZP': No such file or directory @ error/ps.c/ReadPSImage/830.
convert: no images defined `/var/folders/gd/n7rzfhkd5jd0ws8jnzsz34hr0000gn/T/simple_captcha20121218-64930-1thtfpf.jpg' @ error/convert.c/ConvertImageCommand/3032.

Any ideas?

score 160 · Accepted Answer · edited Apr 21 '22 at 09:00

160

Looks like you're missing ghostscript. If you are using Homebrew you can install it via:

$ brew install ghostscript

edited Apr 21 '22 at 09:00

Glorfindel

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answered Dec 18 '12 at 15:38

cfeduke

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Sometimes you have ghostscript but it's just not linked! `$ brew unlink ghostscript && brew link ghostscript` – Gant Laborde Nov 07 '14 at 04:40
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This also works when the error message doesn't specifiy the missing font, as in `convert: unable to read font \`(null)' @ error/annotate.c/RenderFreetype/1153` – LeEnno Jun 15 '15 at 09:15
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is there anyone for windows help? – Rishabh Agrawal Apr 05 '17 at 11:00

Anish Varghese · Answer 2 · 2020-01-15T04:53:34.943

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if you are using Ubuntu or in a docker with Ubuntu remove and reinstall ghostscript package will fix your issue

apt remove ghostscript
apt install ghostscript

edited Jan 15 '20 at 04:53

answered Jan 14 '20 at 11:08

Anish Varghese

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ImageMagick: Error while running convert: convert: unable to read font

2 Answers2

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