Re: Gap Under Interior French Doors
I'd be inclined to leave it alone. The gap is a little wide, however, if you have forced air HVAC, then the gap will help keep that room to temperature.
If you absolutely must shorten the gap, then I'd install a filler strip that is the same wood/finish as the door, then I'd install brass kick plates to either side to hide the seam. Quick, simple, acceptable in most situations. If you want to keep the doors pristine, then Jack's recommendation of shortening the jams would be the way to go. The thing here, though, expect damage to the trim and jamb in the removal process, plus the likelihood of a paint line above the door when the trim is jimmied down 3/4". That's an awful lot of work and hassles for 3/4" less gap under the door.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!