Run standalone web app in Google Chrome without borders or toolbars

Start Chrome with the --kiosk flag. Then, no borders etc. will be shown. Furthermore, pressing F11 will not exit this mode, so it's the most effective way of running a Kiosk-like app.

chromium --kiosk http://example.com/

Replace chromium with the path of your actual Chrome executable (e.g. chrome.exe).

In the new Chrome (v88) it might be required to add --user-data-dir parameter to remove the title bar, so the line would go like this:

chrome.exe --user-data-dir=c:\temp --kiosk http://google.com

If you open Chrome in app mode, like Trever suggests, then borders will still be visible.

From the linux man page:

--app=URL
          Runs URL in "app mode": with no browser toolbars.

e.g. invoke it with google-chrome --app=http://example.com