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Author Topic: ImageMagick generates HUGE thumbails for 24-bit PNG files with alpha channel  (Read 2767 times)

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ImageMagick generates HUGE thumbails for 24-bit PNG files with alpha channel
« on: September 08, 2006, 11:59:18 pm »
Hi. I'm using imagemagick for image handling on my server.
http://img419.imageshack.us/img419/9862/image71ge7.png
When i'm trying to upload this image to my gallery, it generates ~330kb thumbail (224x400px), but original is just 191kb for 350x550px!
It can be solved if you're using "-strip -depth 8" option for PNG. Then thumb becames about 98kb. I don't think "-depth 8" is good option for every format (didn't checked, sorry), but seems like it's good to use it to handle PNG files.

I don't know, maybe it's just ImageMagick bug. Try to generate thumbs for this image using default coppermine settings.
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Nibbler

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Re: ImageMagick generates HUGE thumbails for 24-bit PNG files with alpha channel
« Reply #1 on: September 09, 2006, 12:04:57 am »
Works fine for me. Make sure you are running an up-to-date version of ImageMagick.
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