Cropper

I recently had the opportunity to test out a handy little tool called Cropper. This software is designed to convert sets of jpg, jpeg, png, or gif images to a common size, particularly useful for creating animated gifs.
One of the best features of Cropper is that it crops and scales images to a common and specified size with ease.
The Java source code is also provided, which is a big plus for those who are familiar with Java programming.

To convert a single file, all you need to do is type:

java.exe -jar C:\com\mindprod\cropper\cropper.jar 200 300 rabbit.gif

Here, you can see that the desired size is 200x300 pixels. The results of the conversion replace the old file, so be sure to make a backup if there is any doubt.

It is also possible to list multiple files on the command line, like this:

java.exe -jar C:\com\mindprod\cropper\cropper.jar rabbit.gif C:\mydir\cat.png

To convert an entire directory of jpg, png, and gif files, simply use:

java.exe -jar C:\com\mindprod\cropper\cropper.jar .

For those who need to convert whole directory trees of images, use the following command:

java.exe -jar C:\com\mindprod\cropper\cropper.jar -s E:\imagedirs

It's important to note that Cropper does not support the use of wildcards, just periods and double periods. Caution is advised when using wildcards as Windows expands them, sending a giant list of all directories and files in the current directory to Cropper. This will result in Cropper unnecessarily processing entire directories.

Overall, I found Cropper to be a simple yet powerful tool for converting images. For those who regularly work with photos or other image files, Cropper is definitely worth checking out.