Close the hinge side gap by bending the knuckles.
How to bend hinge to open gap on door.
Use a hinge leaf as a template to make a cardboard shim that you can slip behind the leaf.
To check for loose hinges open the door a few inches then grip the latch side edge of the door and lift up.
Check to see the door stays open and that it still shuts properly.
A difference of 1 16 in.
If the door swings open on its own unscrew the bottom hinge and the middle hinge if it has one.
Hinge backset while not part of the hinge itself it s important to know this dimension for your hinge size calculations.
Unscrew the top door hinge and add the other 2 cardboard cutouts.
To shrink a gap on the latch side hold the head of a nail set between the leaves and gently close the door.
Set an open ended adjustable wrench also called a crescent wrench just larger than the hinge knuckle.
Now that both door hinges are slightly raised by the pieces of cardboard the gap between your door and the frame should be smaller.
To adjust hinges so that a door will fit better in a jamb and maybe eliminate scraping on the head or the strike jamb i bend hinges.
Next move the hinge out a little away from the doorstop and screw it back on.
This will close the gap.
Remove the hinge pin and bend the door side knuckles toward the door handle.
If a hinge leaf is recessed below the surface of the jamb or the door edge the door will not close well and the hinge will bend when you close it.
Is easy to notice.
Then screw the top door hinge back in place over the cardboard like you did with the bottom hinge.
If you feel play in the door one or more hinges are loose.
Getting back to your question of how to adjust gaps once a door is hung i learned a hinge leaf bending trick from a gary katz article long ago hanging a new door in an old jamb aug 1999.
This is the distance the edge of the hinge is set back from the door face.
Repeat the test while watching each hinge for movement.
Loose hinges are caused by screws in the door or the door jamb losing their grip.
This will leave a little gap where the hinge was chopped in.