Clean the tile and the surrounding area
Remove dirt, dust, and grease
Dry the surface completely
Assess the crack size and depth
Use tile repair epoxy or filler for small cracks
Mix the repair product according to instructions
Apply the filler into the crack with a putty knife
Smooth the surface level with the tile
Remove excess material before it hardens
Let the repair cure fully
Sand lightly if needed after curing
Match the tile color with touch-up paint or glaze if required
Replace the tile if the crack is large or the tile is loose
Remove grout around the damaged tile
Break and lift out the cracked tile carefully
Clean the adhesive from the substrate
Apply new thin-set mortar
Set the replacement tile in place
Regrout the joints
Wipe away excess grout
Allow the repair to cure before use