You need to upload two square PNG or JPG images that differ slightly from each other in several places (from 5 to 20). It is recommended PNG format and size 512x512. Differences should be noticeable, not overly small and yet compact. After loading the second picture, click the processing button.
Attention! After that, before clicking the publish button, check very carefully that the program correctly recognized all areas of difference and did not add unnecessary ones.
Also you can create in any editor, yourself modifying or adding objects in the picture or the picture.
To erase objects there are still program Inpaint (surcharge): https://ru.wikipedia.org/wiki/Inpaint
Perhaps you know of other tools suitable for these purposes, share in the comments.
I use photoshop. in it and draw and edit and iiii you can delete unnecessary labels .., to remove the background...
so many possibilities the program has
@olenenok, thank you
and here is an example of how the program has not noticed an obvious difference in color https://grandgames.net/differences/id124613#id393786
learn from the mistakes of pioneers in the Appendix