Actually, I believe you can override this on the elFinder initializer...
Edit the file: /administrator/components/com_k2/views/media/tmpl/default.php
And right after:
url: '<?php echo JURI::base(true); ?>/index.php?option=com_k2&view=media&task=connector',
add this:
commandsOptions : {
resize: {
presetSize : [
[100, 100],
[320, 240],
[400, 400],
[640, 480],
[800, 600],
[900, 600]
]
}
},
Save the file and check the Media Manager for the newly added 100x100 (first in the array) and 900x600 dimension (last in the array). Similarly add your own dimensions or edit the existing ones.
P.S. Under the "Crop" option, if any of your defined dimensions is bigger than the actual image's dimensions, they won't be shown. This is intentional.
