Image manipulation extention

Yii 1.1 General Discussion
1

Is there an extension which allows validating image files (max pixel height and width) AND changing them after they are uploaded? (I have found an extension to crop image, but what I want is to scale it.)

2

http://www.yiiframework.com/extension/jumploader-java-uploader/

http://www.yiiframework.com/extension/upload/

hope these help