How to exit fullscreen in android chrome? I've added one of my regular news websites to my homescreen in android chrome (android 4.4, phone). This works great, it now even opens the site fullscreen to give an 'app experience'. 

How can I exit this fullscreen mode? For instance so I get access to the menu so I can share articles.

The 'add to home screen' feature is described here
I don't think you can. The site is supporting the mobile-web-app-capable view which means Chrome displays it like an app, hides the address bar and it integrates into the recent apps menu as though it was a 'normal' app.
I don't believe there is a way to exit fullscreen when using a bookmark to a site like this.

For those who are unsure what the OP is referring to, http://weight.aerotwist.com/ is a site that supports this 'app' mode. If you browse to the site in Chrome and chose the menu option "Add to home screen" this adds a 'bookmark' to your home screen which when used launches the site in Chrome in app mode.

See here for more details.