How to validate image dimension (height x width) before upload?

I need to validate image dimension to only allow image that meets required dimension to be used for upload. I’m not aware of such validation available in Wappler but I googled and found tut on how to achieve it using php and javascript. I think it’d be too complicated for me to integrate that script with Wappler’s validation.

Is there any idea how can I achieve it using Wappler’s build in functions without having to resort external resources?