What type of paint and what type of tile? What is the base to your paint, in other words. Different paint and different tiles have different answers. Often with older ceramic tile and if you don't use oil based paint... you can simple take a fingernail and scrape it off easily with no damage to tile. You can try a small razor blade and be very very careful about it, which is what i've done many times. Paint thinner can help, mineral spirits as well. But can hurt many different types of tile. But without knowing specifics, i can't give a specific answer to the best method of getting the paint off.
Its probably real enamel and if so,will be bonded very tight.Paint remover,steel wool,and a scraper might be your only help,but depends on the tile as to if this will scratch it.They make rotary paint removers that attach to a drill and little wires slap the paint off.I think they make a plastic version of these for easily damaged surfaces.There are hot air paint remover guns that might help also.Might be easier to repaint the tile to a blank color that matches your current color scheme,then try your hand at hand painting flowers on some of them as an accent.Be creative.Hope this helps..
