Without replacement tiles, what is the best way to repair the affected area without putting in a tiles that doesn't match? If you have ceramic glazed tile and cracks here is an easy fix. Find a nail polish, or a combination of polishes and mix to match your tile. First off, anything looks better than a big dark crack. You can do it over and over until you get it right(no one time shots). Check the following steps on fixing cracked tile with nail polish.

Best Method To Fix Cracks In Tile Without Replacing Them - Fix Ceramic Tile With Nail Polish

1. If you have tile that's old with big crack, you can just fill it in with wood glue, wood glue will expand and contract with your house if it gets dragged in and opens up and then rains and it closes back up. The wood glue will help, fill in the big areas.
2. So, you need some finger nail polish. It's a little dark, so you have to get some wipe to mix with it, it'll only work on tile that has a glaze finish. If you wouldn't want to put it on a porous tile, I don't think it would work.
3. So what you need do is after the wood glue dries, if you have a big crack you just use that polish remover to remove it, and then add a little bit of white, just mix it up. you can see that it's starting to kind of blend in with my tile, I think I might need a little more white, I try not to mix my little brushes up,  I try to only mix it on the tile that way well. The colors stay pretty true, then you just kind of go over it. I'm gonna get it in the crack. What we'll do is you let that dry.

4. The other ones drying, you have a crack that's chunk knocked out and you can have some more fingernail polish over there, just fill that in drops in there a little bit, and then once that dries you get the Faro polish remover and then you just kind of smooth it out.
5. After finger polish has dried, you need to take a cotton swab and put some fingernail polish remover on it and you just kind of lightly go over, it will get that spot where you mixed it and it might take a couple of tries to get it to where you're happy with it, but you can just keep doing it and doing it. You're not hurting anything and as you can see it's pretty much, it disappeared and go ahead and do some more.
6. Just wipe that off and go over it with real fine sandpaper, if it has too much of a sheen on it, you can go over it with just a really fine sandpaper and take the sheen off. And ceramic tiles pretty durable, pretty much made crack invisible.