Screenshots are saved in DCIM stands for Digital Camera Images and Google photos backs up DCIM which shouldn't happen Screenshots are not Digital Camera Images so please don't put them up their -
What is a Digital Camera?
Why Does Every Camera Put Photos in a DCIM Folder?
Ask 404TS: Why are photos from a digital camera always in a folder called DCIM? - 404 Tech Support
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Why Are Photos Stored in a DCIM Folder?
camera - What's with all the random folders in the DCIM directory for iPhone? - Ask Different
Why Does Every Camera Put Photos in a DCIM Folder?
In phone storage, what does DCIM stand for? - Quora