I posted the same question a while ago. It should seem to simple.. somewhere in a settings dialogue allow operator to enter a mask for file names.
Like some image grabbers would have %N = Name, %W = width etc.
That way you could export with or without mask, and have the file name be either
01_HOMEPAGE_20170431.png using the mask %N2%T%D for number 2 digits, title and date.
Look at irfanview and Stone Capture (free) for inspiration.
It's frustrating not being able to use variable data stored internally in the software.
Hope this is implemented.