With the @pixelfed url shortener, you could share a post url with less than half the characters in some situations

For example lol:
pixelfed.furryfandom.me/p/terrencefoxfur/555811865973597526

would be shortened to

px.lfed.co/32/e2o_KBTaVW

Groups will also use this to have easily recognizable and short sharable links like

px.lfed.co/group/1/fediverse-developers