Switch easily between browser and editor

My usual workflow is like that (for instance): My screen is split into two. My editor (Emacs or whatever) for markdown is on the left, the other on the right (web browser to view the results of changes I made in editor.) - Save changes in my editor - Press Alt-Tab to switch to browser window. I usually have many windows open and it is sometimes taking time to press Alt-Tab several times (I usually miss the window I need.) Then click F5 to refresh my browser. - Then back to my editor to edit my markdown and recycle above items again if necessary. I wonder there is a way to shorten the time of doing all the steps above. I am using Gnome. I would like to bind a key for all steps above.