Microsoft Editor is your free and intelligent grammar, spelling, and style checking writing assistant. It moves with you across sites like LinkedIn, Gmail, Facebook, and others including Word docs, providing you intelligent writing assistance, advanced grammar and style checking on clarity, conciseness, formality, vocabulary, and much more with premium. When you install the extension, a dimmed Editor icon is added to your browser’s toolbar. Click the icon and sign in with the account you use for Office or sign in with your free Microsoft account. A useful tool to improve your writing.