Avoid seeing print preview
Windows:
Check that your receipt printer is set as your default printer.
Create a Google Chrome shortcut on your desktop, rename it to like SlickPOS to make unique.
Right click on the new shortcut on your Desktop and select " Properties"
and click on " Shortcut" TAB.
At the end of the target field add:
--kiosk-printing and click OK.

You are done !
Mac
Quit your chrome browser
Open terminal
Execute command - bash
Execute command - /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome -kiosk-printing --prevent-review web.slickpos.com
You are done !
Check that your receipt printer is set as your default printer.
Create a Google Chrome shortcut on your desktop, rename it to like SlickPOS to make unique.
Right click on the new shortcut on your Desktop and select " Properties"
and click on " Shortcut" TAB.
At the end of the target field add:
--kiosk-printing and click OK.

You are done !
Mac
Quit your chrome browser
Open terminal
Execute command - bash
Execute command - /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome -kiosk-printing --prevent-review web.slickpos.com
You are done !
Updated on: 10/02/2018
Thank you!