This extension can be useful if your are tired of changing url by adding query parameters again and again.
You have a website (raturi.in) and there is a query parameter mob=false i.e., raturi.in/ ?mob=false , that is used to render a mobile site. So everytime you have to modify your url mob=false and mob=true. Imagine if you have 10 or 20 or more, is not this a head ache to change the parameters everytime to render a different page. If you are having a similar kind of problem or is related than this extension is for you.
Using this you can create action button for a particular set of url parameters. Now whenever you need to change query parameters instead of doing it manually you can click on action buttons.