[notinventedhear]

One nice quality of life improvement for i3 is update the window names dynamically and use emojis for applications

https://github.com/cboddy/i3-workspace-names-daemon

[FranOntanaya]

You can configure the window icons directly in the config file.

for_window [class="(?i)firefox"] title_format "<tt></tt><span foreground='#FF6611'>  </span><tt> </tt>%title