purewhite screen
About Candidate
Blank white screen free online tool use for monitor cleaning, reading mode, eye care, sleep light & screen testing on any device without downloading.
https://ko-fi.com/purewhitescreen
https://fliphtml5.com/home/purewhitescreen
https://app.readthedocs.org/profiles/whitescreen/
https://www.codementor.io/@purewhite_screen