While you’re using Grammarly products, Grammarly needs access to your text in order to provide suggestions and corrections. We use powerful algorithms based on machine learning to check your writing and identify mistakes. Without access to your text, there is no way for our products to provide feedback.
Grammarly can’t access anything you type unless you are using a Grammarly product, such as the browser extension or mobile keyboard. Additionally, Grammarly is blocked from accessing anything you type in text fields marked “sensitive,” such as credit card forms or password fields. You can disable Grammarly at any time if you don’t want it to check a particular piece of text.
For example, if you deactivate the Grammarly extension on Facebook, Grammarly cannot access anything you type on that website until you re-enable the extension.