Re-generating images
4:25 pm on October 21st, 2007, by Andy Tawse
I always forget where to find this info so I’m putting it here so I can find it next time I need it.
If you’ve got a load of images which have been resized but don’t look good for some reason (e.g you used PHP gd) you can regenerate them on the server using ImageMagick:
mogrify -path thumbs -thumbnail 90x *.jpg
will resize all jpgs in a directory to a width of 90 pixels and save them into the thumbs directory.
In this case I then had to rename them all (on Linux):
for file in *.jpg; do mv $file `echo $file | sed ‘s/\(.*\.\)jpg/\190.jpg/’`; done
This renames all jpgs to 90.jpg
