Advanced Image Editor is a simple to use online image editor. You can test it on Demo site:
http://opencart1541.iasknet.com/admin
User: test
Password: test123

Go to Catalog->Products->image

Features:
* Scale image as specify size.
* Crop image with any dimensions.
* Rotate counter-clockwise and clockwise.
* Flip vertically and horizontally.
* Undo and Redo operation.
* Absolutely Ajax technology.
* Compatible Browsers: IE7+, Firefox 4+, Safari 3+, Opera
* Support for v1.5.5.1, v1.5.6, v1.5.6.1, v1.5.6.2, v1.5.6.3

Recommend a good online design banner site to you: http://www.designbanner.net
It's very easy to create a banner. The most important is it's free!

Installation:
1. Install it as a normal VQMod extension.
2. Assign administrator group access and modify permission for "common/imageeditor".(System->Users->User Group->Top Administrator)
3. Go to product page and test image editor functions.


Any questions please send me email or message, I will reply ASAP.
If you need installation services, just send me your FTP and admin panel account and pass. That's free!
My email: lujunsang#gmail.com (replace # as @)