Sticker residue on glass really sticks out like a sore thumb and it’s not the sort of appearance that you want with your glass products. So, in order to remove the sticker residue, your best bet is to start with heat.
Heat is your best friend because it helps to loosen the sticker’s adhesive nature and lets you pull the sticker off in one go, rather than by scratching at it time and time again. The easiest way to do this is by using a hairdryer, lightly blowing the hot air onto the sticker to heat it up. Once it’s heated up a bit, you should be able to scrape off the sticker with something plastic like a credit card. Just be careful not to scratch the glass when you do so.