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Installing Greasemonkey user scripts could not be any easier, usually, but how do you install a .js file which has already been downloaded like, for example, from GitHub, or copied from pastebin?

With Google Chrome's built-in Greasemonkey support there is no apparent interface to do this, and I cannot find any suitable location in the user directory.

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up vote 3 down vote accepted

Rename the file to *.user.js and drag and drop the file to Chrome. It'll prompt you if you want to proceed with the installation. The script will be converted to a Chrome extension and installed.

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Ok, it now says

Extensions, apps, and user scripts can only be added from the Chrome Web Store.

But you can still drag and drop user scripts or extensions onto chrome://chrome/extensions/ page aka Menu — Tools — Extensions.

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