ImageMagick command to convert and save with same name

Question

I am using ImageMagick convert command for making thumbnails & save the converted images in another directory, one by one, in PHP.

But, cant figure out how to keep the the image name in the converted image.

> convert 1.JPG -resize 120X120 thumb/*.JPG 

need to keep the output file names same as the input. Please help.

Answer 1

Another way:

convert *.jpg -resize 80% -set filename:f '%t' ../'%[filename:f].jpg' 

Will place converted files in the folder above.

The option -set filename:f '%t' sets the property filename:f to the current filename without the extension. Properties beginning with filename: are a special case that can be referenced in the output filename. Here we set it to ../'%[filename:f].jpg, which ends up being the image filename with the extension replaced with .jpg in the parent directory.

Documentation references:

• -set documentation, which mentions the filename: special case
• %t and other Format and Print Image Properties

Answer 2

A simple solution would be copy, followed by mogrify - another imagemagick tool - this will keep the same names, it takes all the same args as convert.

cp *.jpg thumb/ cd thumb mogrify -resize 120X120 *.JPG 

Alternatively you could do a bit of shell scripting, using find -exec or xargs

# using -exec find . -iname "*.JPG" -maxdepth 1 -exec convert -resize 120x120 {} thumbs/{} \;  # using xargs find . -iname "*.JPG" -maxdepth 1 | xargs -i{} convert -resize 120x120 {} thumbs/{}