Rated 5 out of 5 stars

It will be a good idea if the saved page URL be saved with the page too.

This review is for a previous version of the add-on (0.18.3). 

The original location is available in web archives

Usually, the original location a page was saved from is available in web archives, and by default it can be viewed using the icon in the address bar. If this is not what you're asking for, please let us know in the support mailing list!