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2011-03-12 - Confoo 2011 presentation
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Top Tags



Batch image resize

Terminal - Batch image resize
for a in `ls`; do echo $a && convert $a -resize <Width>x<Height> $a; done
2009-08-02 22:35:24
User: leavittx
Functions: echo
Batch image resize

Resizes all images in the curent directory to x resolution.

It is better than `mogrify -resize *.jpg` because of independence from extension of image (e.g. .jpg and .JPG) (:


There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

`ls` is bug-prone, just use *

if you care about case, use *.[jJ][pP][gG] or more sanely,

find . -maxdepth 1 -iname '*.jpg' | while read a; do convert ...; done
Comment by eichin 297 weeks and 5 days ago

You don't need ls to discover files. By default your shell should expand `*` to every file name, or `*.jpg` to every jpg file in the current directory. Here's another way based on eichin's version:

find . -maxdepth 1 -iregex ".*\.jpe?g" -exec convert {} -resize WxH {} \;

will match jpg/JPG/jpeg/JPEG.

Comment by bwoodacre 297 weeks and 4 days ago

Notice that if you are using linux (don't know about Win) only the solution proposed by bwoodacre will work for filenames with a space inside.

Comment by javier 282 weeks and 1 day ago

I just found it. Wouldn't be better to use mogrify?

mogrify -sample 50% *.jpg
Comment by javier 282 weeks and 1 day ago

Your point of view

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