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Do Greasemonkey scripts have chrome privileges?

April 26, 2017Chrome greasemonkey privileges scripts

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Do Greasemonkey scripts have chrome privileges?

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No. Scripts are considered to exist in a space between untrusted content like web pages and fully trusted content such as extensions. Thus, their special permissions are limited to the chrome-level privileges exposed by the GM_* API, like cross-domain XMLHttpRequest and persistence via GM_setValue(). You’ll have to write a full extension to make use of chrome-only features.