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WARNING
This page and github only source for downloading shotscreen
macOS — First Launch
Because Shotscreen Browser is not distributed through the Mac App Store, macOS Gatekeeper will block it on the first run with a "can't be opened because it is from an unidentified developer" message.
Run this command once in Terminal after moving the app to your Applications folder:
bash
xattr -cr "/Applications/Shotscreen Browser.app"Then open the app normally. You will not need to repeat this step.