Instead of Print Screen, use a screen caprure program - I use MWSnap. You can cout out the exact section you require, and save as a jpeg directly from it.
I use it constantly for such purposes.
Huawei MateBook X Pro review: Hands-on
The art of 'British' pulp fiction
Best password managers for Mac
TV & streaming : comment regarder le Tournoi des Six Nations 2018 ?