What are PNG~ files?

Not sure if this is the right place to ask, but I keep getting files with the ~ symbol beside them.
I have the actual PNG version of an image but right under is the same file, labeled PNG~.
Should I keep them? Is it safe to delete them?
Looks like this (happens with krita files as well):

krita file with ~ symbol


Prefixed or suffixed tildes usually represent temporary files or backups. Sometimes they may persist longer than they’re meant to, which usually means your software didn’t finish a save operation or something similar.

If you have the actual PNG and KRA files intact, it should be safe to delete the temporary/backup files. If you want to see their contents to make sure, just remove the tilde and open them.

Source : Link , Question Author : Lauren Keogh , Answer Author : Joseph Massaro

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