Do you have
http://www.imagemagick.org/ installed on the server?
If so, you can bulk-resize by calling ImageMagick with the following parameters in the directory with the images on the server:
Code:
mogrify -resize "2880x1800>" *.jpg
, where:
- 2880x1800 - are the desired maximum dimensions
- *.jpg - is the wildcard for the files to be processed by the script
If you don't have SSH access to the server (so you can't run the above command on the server), you can install ImageMagick on your local computer and run the command there (and then upload changed files to the server).