Long ago, I found a Firefox extension called Compact Menu that put your Menubar in a button that popped up your hidden Menu in a vertical fashion.

I don’t use my Epiphany menu more than 2 times a day and it’s only for Bookmark browsing and maybe allowing popups on a site so as you might guess I find those pixels wasted.
It took some time for me to realize that it wasn’t possible to convert that gtk.MenuBar into a gtk.Menu or something that can be embedded on a gtk.*Button (like gtk.MenuToolButton). This put me on a scenario where I would never clone the FF extension but some hours ago I realized that I didn’t have to clone the extension, I could do something better or similar to it.

My solution was pretty simple, adding a button that toggled the menu as hidden or shown.

Hidden menu extension
Hidden Menu extension + Super Tab Extra + Remove Throbber

Now, add this extension to Super Tab Extra or Only One Close Button (STE does what OOCB does, but I don’t know why :/).
I would also recommend you to remove the throbber with my Remove Throbber extension for a more eye candy’er experience.

Download Hidden Menu extension.
Or download more extensions on my Epiphany Extensions page.

Enjoy!