There are a variety of dumpling wrappers at the market: wonton, pot stickers, gyoza, jiaozi, etc., and you might be overwhelmed with the many choices. Choosing the right dumpling wrapper is actually very easy.
If you are making Potstickers or Gyoza, buy the wrappers labeled as “Potstickers” wrappers or “Gyoza” wrappers. They are round in shape and essentially the same thing. If you are making wontons, buy the ones label as “Wonton” wrappers. Wonton wrappers are square in shape, and might be yellowish in color.