Is there is a way to Limit on upload Photo size?

Question

Hi guys, 
 
 I just want to know is there is a way, that using experssion rules to limit on size of uploading picture? 
 
 I am not talking about the File's size(1MB, 2MB), I am talking about the Length or Pixel size. 
 Like getting Length, Width, Height of the Picture by prividing the Picture or Picture storage size , maybe 2MB. 
 
 If it is not resolveable, is there are any Plug-in can help us doing this? 
 or is there are any Java code I can have a look, and duplicate same logic into Sail Expression? 
 
 Thanks

Mike Schmitt · Answer

I forget whether there's a plug-in for this, but you'd need to submit the form with the uploaded file and then check the image properties (if possible), and then potentially loop the user back to the same form with a custom error message if the uploaded document doesn't match what you were wanting. You wouldn't be able to do this verification within the same form that the picture was uploaded, as far as I can see.