Resize multiple images with imagemagick from a folder to other (and keep the name) with a command

Question

Let's say that the images are in the directory /Desktop/projs/proj1/img/ and I want the output files to go to /Desktop/projs/proj1/imgResized/.

I tried this command:

convert /Desktop/projs/proj1/img/*.png -resize 130x130\! /Desktop/projs/proj1/imgResized/converted.png

This works, but the output images are renamed to converted-0.png, converted-1.png, etc.

I tested other commands to see if the images keep their names:

for PHOTO in /Desktop/projs/proj1/img/*.png; do BASE=`basename $PHOTO` convert /Desktop/projs/proj1/img/*.png -resize 130x130 /Desktop/projs/proj1/imgResized/$BASE.png; done;

But it’s not working.

How can I do this? And if possible, how can I do the same but for compressing all the images from folder A to B?

Your second code is wrong it should be convert "$PHOTO". The for variable should be used. — George Udosen, Aug 26 '18 at 14:26
And I see that you have /Desktop that directory does not exist except you created else it should have been /home/$USER/Desktop — George Udosen, Aug 26 '18 at 14:31

George Udosen · Accepted Answer · 2018-08-26T16:42:03.393

8

This:

for i in /home/$USER/Desktop/projs/proj1/img/*.png; do 
    convert "$i" -resize 130X130 "/home/$USER/Desktop/projs/proj1/imgResized/${i##*/}"
done

should work, modify.

edited Aug 26 '18 at 16:42

answered Aug 25 '18 at 14:38

George Udosen

36,677

$i includes /Desktop/projs/proj1/img/ – Vijay Aug 25 '18 at 16:57
"$i" are the individual files in that folder img! – George Udosen Aug 25 '18 at 17:04
Try this >> for i in ~/Desktop/projs/proj1/img/*.png; do echo $i; done – Vijay Aug 25 '18 at 17:21
Your point @Vijay? – George Udosen Aug 25 '18 at 17:28
posted the command line – Vijay Aug 26 '18 at 12:25
should work, modify ??? – Vijay Aug 26 '18 at 12:25
1

Thanx for the edit works now. – Vijay Aug 27 '18 at 12:13

Vijay · Answer 2 · 2018-08-30T22:17:50.327

2

Fewer keystrokes:

 for i in ~/Desktop/projs/proj1/img/*.png; do convert "$i" -resize 130X130 "${i/img/imgResized}"; done

edited Aug 30 '18 at 22:17

answered Aug 26 '18 at 12:22

Vijay

8,056

score 2 · Answer 3 · answered Mar 02 '23 at 14:10

Welcome to 2023! Surprised mogrify was not mentioned in connection with imagemagick.

Assuming the imgResized directory already exists, the below should work fine from the directory containing the original images, and keep the original names. No loops necessary.

mogrify -resize 130x130 -quality 100 -path ~/Desktop/projs/proj1/imgResized/ *.png

Resize multiple images with imagemagick from a folder to other (and keep the name) with a command

3 Answers3

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