I was looking for some simple tools for clone detection in pictures – unfortunately or luckily – there is no one button solution also in 2020.
To extract the pictures I use unar (“brew install unar”) which preserves much more detail than a screenshot. For the next step, I cann recommend Forensically, Fotoforensics or Reveal. Maybe there are also situations where some some individual adjustments are needed where I move to Affinity like in the following picture.
“There is currently worldwide concern over corruption in education. This concern touches all Member States and all levels of education” according to the European Counsil. Academic integrity is now a major issue that needs much more attention.