Regarding your questions Rated 4 out of 5 stars

Here are the answers on your questions listed below:
1. I use Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0
2. So, it is for web designers, not for me, sorry for disturbing
3. Of course, it isn't MUST BE requirement, it is not even requirement at all - only suggestion
4. OK, thanks
------------------------------ And here are your questions: ----------
1.You said it doesn't open new window, so pls tell me details, for instance, which OS, OS-version, which FireFox-verion , and on which specific web site(it should open window on "google.com" web site! ), etc.
2. The list shows all image path and name of them at the page you are on. Web site managers have trouble about messy files on the server, esp. image files. For them, this add-on helps.
3. Yes, but may be for the future. I need time and donation(maybe). Does having icon is a MUST for the requirement of full-review?
4. This add-on doesn't clean files or contents. That kind of action is a violation against the web site you visit. The add-on gives you a hint to clean up needless files in your web site. So, showing list is a must, because it is the purpose of this add-on.

This review is for a previous version of the add-on (1.0.1).  This user has a previous review of this add-on.

With Firefox 16.0, the latest version ,v1.0.1, of ExtractImages does works, so please upgrade add-ons.