Fall View
Displays your current fall distance and estimated incoming fall damage on screen.
Disable while flying
Hide the display while using Fly or Elytra.
Only while sneaking
Only show the display when you're holding sneak while falling.
Override health format
Use a custom format for the health display instead of the default.
Show damage
Show the estimated fall damage you'll take on landing.
Show distance
Show how many blocks you've fallen so far.
Show remaining health
Show your health after the estimated fall damage is applied.
See also: Water Bucket, NoFall