How can I make Ubuntu Dock narrower?

Question

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).

Answer 1

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.

(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

Answer 2

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: