Chromium-based browsers interpret this permission somehow vaguely as permission to 'read your browsing history', which is also the only reason why this permission is listed. This is required by the print lesson notes feature. Tabs permission is required to establish communication between Duolingo website tab(s) and Duolingo Boost.Storage is used to locally store Duolingo Boost related data.Notifications are used to display notifications about your current daily goal status and extension updates.Permission to read cookies (only for the domain) is required to read your current session information, e.g.It needs permission to modify context menus to provide you option to print lesson notes from the website context menu.It also needs it in conjuction with some other permissions listed below. This is required by features like night mode which is done by applying custom CSS rules. Duolingo Boost requires access to and duolingo.cn (for Chinese version) domains to be able to read and modify Duolingo website source code.

Since different browsers explain required permissions differently, I'm providing brief list of what functionality Duolingo Boost require and why. Duolingo Boost makes use of several of the APIs. This access is given by accepting permissions the extension asks for.

Why does Duolingo Boost ask for some particular permissions? In order to work, Duolingo Boost needs access to some of the standard JavaScript APIs. If neither of the above is true and you still cannot see the number, feel free to contact me. They are refreshed every 30 seconds, so probably you just need to wait a few more seconds. If they do and you still see the question mark instead of a number, it may be that Duolingo Boost just doesn't have your current data yet. First of all, make sure your Duolingo Boost user and username of the Duolingo account you have logged in match. I cannot see number of XPs even when I logged in to my Duolingo account. In case there is a question mark (?) instead of the number, it means that you need to log in to the Duolingo account you are using Duolingo Boost with. Q&A What does the little number on the notification icon mean? The number shows how many XP are needed to achieve your daily goal.

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