SwiftyJSONAccelerator.app can't be opened OR App demaged can't be opened

When i download app from GitHub and open.
“SwiftyJSONAccelerator” can’t be opened. You should move it to the Trash.

My solution is

1. Move file SwiftyJSONAccelerator.app to aplication

2. in terminal use this

sudo xattr -rd com.apple.quarantine /Applications/SwiftyJSONAccelerator.app

3. now u can run app

Update :

If you use Os Majove  and get an error like this

if you use the version just before the last one (v1.3.0), it will actually work on Mojave.https://github.com/insanoid/SwiftyJSONAccelerator/releases/download/v1.3.0/SwiftyJSONAccelerator.zip

and in terminal

sudo xattr -rd com.apple.quarantine /Applications/SwiftyJSONAccelerator.app

Update : 20-11-2019

Launch Terminal and then issue the following command:

xattr -cr /path/to/application.app

For example:

xattr -cr /Applications/Signal.app

The -c flag removes all attributes, whereas -r applies recursively for the entire targeted .app directory contents.

source: http://osxdaily.com/2019/02/13/fix-app-damaged-cant-be-opened-trash-error-mac/

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