Is she pure English bulldog?

Hi everyone, we recently just adopted such a sweetheart of a bulldog. The previous owners had to move into an apartment and wanted a better environment for her, and we came across her.

They said she is a pure English but compared to photos on Google she kind of looks a little too "refined", for lack of a better word. As such, not as wrinkly, hardly any underbite. She's definitely a bulldog but not sure if purebred. I don't expect anybody to be a human dna test and know for sure but I'm just looking for opinions on what you think!