Legacy ImageMagick Discussions Archive

Hi Guys,

I have trouble with resizing small thumbnail of bibberst images for my web:

exammple: http://fototest.mracek.org/list.php?addr=Screensawer

The thumbnail have approximately 20-30KB !! Is very big !
Photoshop make 6KB pictore. This is very good.
Can you help me, what I make bad ??

You can downalod this image : http://fototest.mracek.org/Screensawer/ ... G_0024.jpg

23KB and compres using imagemagic.

My command line is:
convert -verbose -quality 75 -density 72 -depth 8 -resize 159x159 -gravity Center -crop 106x106+0+0 {} small/{} | echo {}
for example.

Thank you for any idea !

Jan

IM 6.6.3.10 Q16 (HDRI) Mac OSX tiger


convert IMG_0024.jpg -thumbnail 159x159 \
> -gravity Center -crop 106x106+0+0 +repage \
> -density 72 -quality 75 -depth 8 IMG_0024_thumb.jpg

identify IMG_0024_thumb.jpg
IMG_0024_thumb.jpg JPEG 106x106 106x106+0+0 8-bit DirectClass 2.88KB 0.000u 0:00.019

2KB file size

see correct syntax at http://www.imagemagick.org/Usage/basics/#cmdline

dear fmw42,

wow, your tip help me a lot !
I looked to many pages at last 2 days and this option I never found.
Thank you very much.
regards, Jan

Part of your problem may have been syntax order. Part was not getting rid of the headers and profiles (which you could do with -strip -resize rather than -thumbnail) and part was not adding +repage to remove the virtual canvas.

see

http://www.imagemagick.org/Usage/basics/#cmdline
http://www.imagemagick.org/Usage/crop/#crop_repage
http://www.imagemagick.org/script/comma ... #thumbnail