Shows CapsLock, ScrollLock and NumLock as popups. Looks like the volume and brightness popup.
If your icon theme doesn't have a caps/num/scroll lock icon: In settings, you can use either a GTK Icon name, or a file name
Screenshot with Papirus Icon theme and Adwaita Shell theme.
Tested Working on Gnome Shell 3.26, 3.28, 3.30. May work for others.
- Copy lock-keys-osd@n07ftw.github.com to the
~/.local/share/gnome-shell/extensions/ - Enable in gnome-tweak-tool, in browser extensions.gnome.org, in dconf, or wherever.
- No extensions.gnome.org extension yet!
For status panel: keysindicator@caasiu.github.com