It could be a font configuration issue on your side.
As stated in the Github page of urxvt-resize-font
, you have to specify the default font size using the size
or pixelsize
attributes.
The example from the Github page
urxvt.font: xft:Inconsolata:pixelsize=12
should work - at least it worked on my side.
Also, although it’s stated that fixed fonts are supported, using the default font configuration of the i3 edition didn’t work for me.
After changing the configuration to (for example)
URxvt.font: xft:TerminessTTFNerdFontMono:pixelsize=14
the font resizing worked as expected.
Give those examples a try - don’t forget to run xrdb ~/.Xresources
after making any changes in the ~/.Xresources
file - and see if they work.