Limiting File Size Export (Mobile - iPad Pro)

Hello Y'all, 

I'm considering the streamlning to a mobileworkflow, but was interested in the available export features for iPad OS. Is it possible to export, but set a limit on the file size of a batch of images? For example: If I wanted to export several files whileensuring they aren't larger than 20 MB, how would I go about that?

Thank you ahead of time for the support. 

All the best, 

Nick