I have DSW coupons. If I use the codes to buy through the website, will I still be able to use them in store?

If there is a bar code on them you should be able to. Ask at the store too, it can't hurt! They may honor it at the store as well as long as there is no disclaimer on your coupon that it is for online only. If you have to purchase online, try on at the store then go home and order!