One way you can achieve this is using AutoHotkey, I have created a script which Shows a small overlay having the URL of the currently open Chrome tab.
Gui +LastFound +AlwaysOnTop -Caption +ToolWindow ; +ToolWindow avoids a taskbar button and an alt-tab menu item.
Gui, Color , F1F1F1
Gui, Font, s12 ; Set a large font size (32-point).
Gui, Add, Text, w1336 vMyText
SetTimer, UpdateOSD, 500
Gosub, UpdateOSD ; Make the first update immediate rather than waiting for the timer.
Gui, Show, x0 y650 AutoSize NoActivate ; NoActivate avoids deactivating the currently active window.
WinGetText, text, A
FoundPos := RegExMatch(text, "\n(.*)", SubPat)
GuiControl,, MyText, URL: %SubPat1%
To get it running all you need to do is - Install AutoHotkey, then save above script with
.ahk extension and run it. (or you can create
exe from that script for portability)
This script can be modified according to particular needs (font, color, location on screen etc.).