How to remove any elements from online page, and then save edited page in same look with HTML, CSS and images?
I also need to edit text.
Maybe The Printliminator bookmarklet is all you need? I've never tested it for saving the results though.
And when saving before you start then maybe using some HTML editor is much easier?
(For saving, I guess you can use the built-in Save function from your browser, which often has an option to save the complete page. Hopefully that will save the edited version then.)
I suppose that for Firefox, the Aardvark add-on is a solution: