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How can I make Ubuntu Dock smaller? I want to narrow it horizontally (i.e. I want to reduce the size of the icons and make it take up less space).

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2 Answers 2

Reset to default
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GUI option:

Open Settings and navigate to the "Dock" section (or the "Appearance" section in later releases). You'll see a slider to control the size of icons in the dock.

enter image description here
(screenshot source)

CLI option:

Launch a Terminal window and run the following command

gsettings set org.gnome.shell.extensions.dash-to-dock dash-max-icon-size <VALUE>

for example

gsettings set org.gnome.shell.extensions.dash-to-dock dash-max-icon-size 24
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  • This does not work in 20.04
    – Roel Van de Paar
    Aug 20, 2020 at 4:22
  • @roel What exactly doesn't work? The GUI option is still there, but it's now moved into the 'Appearance' section of Settings. The CLI option still works as well. Please be specific.
    – pomsky
    Aug 20, 2020 at 6:17
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    @RoelVandePaar I just noticed you posted an answer suggesting dconf Editor to set the icon size to something less than 16 (lower limit in the GUI option). In case you're unaware dconf is a low-level configuration system whose main purpose is to provide a backend to gsettings. So the gsettings command here achieves the same goal as the dconf alternative (notice the gsettings schema id is analogous to the dconf schema path), which I confirmed in my 20.04 setup. If it doesn't work for you, then most likely you're doing something wrong and/or gsettings is broken in your system.
    – pomsky
    Aug 20, 2020 at 7:05
  • @pomsky agreed... but, a "backend"... or a front-end?????
    – WU-TANG
    Aug 20, 2020 at 8:31
  • @WU-TANG I don't see where the problem is with what I wrote. The main purpose of dconf (not the 'dconf Editor' application which is just a GUI editor for dconf) is to provide a backend to gsettings: en.wikipedia.org/wiki/Dconf
    – pomsky
    Aug 20, 2020 at 8:48
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In the gui, at least in 20.04, it will not let you set it smaller then 16. I needed it to be smaller. With thanks to another answer (https://askubuntu.com/a/1249861/682596) this is possible;

$ sudo apt-get install dconf-editor
dconf-editor

Browse to:

org / gnome / shell / extensions / dash-to-dock / dash-max-icon-size

Then change custom value as required: dconf-editor screenshot

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