If are you in Google Chrome, Firefox or a software that have the zoom functionality, when you press CTRL + SCROLL UP/DOWN` or TOUCHPAD SCROLL the page increase/decrease the zoom how to disable it?

2 Answers 2


In your ~/.config/openbox/lubuntu-rc.xml or rc.xml at:

    <context name="Frame">
  1. set this:

    <!-- prevent that the browsers do zoom in/out when navigating with ctrl + scroll up/down -->
    <mousebind button="C-Up" action="Click" >
            <action name="Focus"/>
    <mousebind button="C-Down" action="Click" >
            <action name="Focus"/>
  2. Type openbox --reconfigure in terminal to check the changes, if the changes has broken it will validate.

It's all.

  • That will work but in the same login you will need to apply openbox --reconfigure. To apply the settings in the same login. Which is the same for any changes to the openbox config file. I think this is a good thing as if there is error with the xml it will not apply and end up with totally broken window management.
    – ianorlin
    Jul 6, 2015 at 18:28
  • Not works anymore on google chrome 51.0.2704.79 (64-bit)
    – deFreitas
    Jun 11, 2016 at 12:35

Use block-scroll-mod-x11. That will disable zooming only, if you press a modifier key after scrolling has started.

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