While using 10.04 and the previous versions I used to put Ctrl+F6 to zoom in and subsequently Ctrl+F7 to zoom out. Now (using 11.10, Unity) I can't even find the options to zoom in and zoom out in the "keyboard shortcuts". I tried "the Magnifier" in the Compiz but really can't understand what is going on right there. There is simple question I would like to ask:
What to do so as to be able to zoom in with Ctrl+F6 and zoom out with Ctrl+F7?
With GNOME Shell (instead of Compiz) as Window Manager (wmctrl -m):
Surprisingly, numpad +/- won't work.
You can change the shortcuts on Settings > Devices > Keyboard and zoom options on Settings > Universal access settings > Zoom:
Orca: Orca is a free, open source, flexible, and extensible screen reader that provides access to the graphical desktop via speech and refreshable braille.
On 20.04 with gnome-shell 3.36.9 it seems to be a bug that slow down everything when zoom is enabled. journalctl -p warning -xef return
gnome-shell[3302]: clutter_actor_allocate: assertion '!isnan (real_allocation.x1) && !isnan (real_allocation.x2) && !isnan (real_allocation.y1) && !isnan (real_allocation.y2)' failed
gnome-shell[3302]: clutter_actor_allocate: assertion '!isnan (real_allocation.x1) && !isnan (real_allocation.x2) && !isnan (real_allocation.y1) && !isnan (real_allocation.y2)' failed
gnome-shell[3302]: Source ID 6859556 was not found when attempting to remove it
Other than the Compizconfig Settings Manager, a new configuration tool is now available called Unity Tweak Tool.
Open Dash (by tapping on Super) and type "Unity Tweak Tool".
If it is not available, you can install it from the command line with the following command:
sudo apt-get install unity-tweak-tool
Open the application, and from the icons choose General under the Window Manager section.
Once you click General, enable the "Desktop magnification" option at the top. And you can change the default keyboard shortcuts of the Zoom In, and Zoom Out functionalities.
As seen in the next screen-shot, I have the Zoom In set to Ctrl+Super+Z and the Zoom Out set to Ctrl+Shift+Super+Z
Personally, I prefer including the Super key to all system wide shortcuts so it won't interfere with a certain application's shortcut.
Open CompizConfig Settings Manager.
Go to Accessibility / Enhanced Zoom Desktop.
Click on the "Disabled" titled Button of Zoom in, click on enable, grab key combination and press ctrl+f7. Do the same for Zoom out, and you are set.
Ctl + Shift + - to reduce
Ctl + Shift + + to increase
I found you also need the + from numerical keypad not the one next to the backspace button.
I found that ctrl and the + sign from the num pad works for zoom, and the same thing but the minus sign from the num pad zooms out. I am on ubuntu 18.04, hope this helps you
On almost all web browsers it is worked for me:
Ctrl + + will Zoom In.
Ctrl + - will Zoom Out.
