Hi; i'm the creator of tool. it's supposed to be sharing your product screenshots as input, using gradient backgrounds and some borders; which it'll automatically try to assign ass some curvatures and such. and export.

This process is repeated daily by designers, frontend devs, indie builders who creates products, ui snippets that they want world to see and grab their attention. as if you share a normal screenshot, most of the people would simply ignore it. in the sense, sometimes if you present your output wrapped in a good wrapper people would perceive it to be of high value and assess further results as such.

hopefully that clears up!