defective-pixels
There are 2 repositories under defective-pixels topic.
Appliberated/DefectPX
Easily check for dead, stuck, or defective pixels. Test monitors before purchasing. Test screens during the warranty period. Test anytime and anywhere. DefectPX comes with multi-monitor support, and a very intuitive interface.
whalecold/defective-pixel-checker
Simple tool to check the defective pixels in the image