Everyone has had a problem with tight shoes at some point of their lives, and this is almost always a problem with new shoes. However, if your shoes are made of leather there is a quick solution!
Take two plastic bags with zip-locks and fill a quarter of them with water. Now, put them in your shoes and put the shoes in your freezer. Once the water is frozen, take them out and let them stay for 20 minutes so the ice can melt. In the end, remove the bags and dry your shoes with a hairdryer.
This trick is great for leather shoes and it will spread them easily. The same method works for artificial leather shoes, but you might need a few tries.