Usually when an application limits your photo quality it should
usually affect 2 things.
(1) your photo file size i.e in bytes (e.g 10kb, 1MB etc)
(2) your photo size in teerms of number of pixels across and down
(e.g 100 wide and 300 tall ~ potrait or 300 wide and 100 tall
~landscape)
The cheapest way i know with only the MS paint from windows can
achieve the file size control with trail and error. But remember to
also save the trials as a different name from the results so that
if anything coks up you still can start afresh with the original
photo. Resizing by interpolation (trial and error) with a
percentage of 100 should do the trick. In fact with some creativity
MS paint can do quite a number of things.