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 ## WebExtension
 ### Permissions
-|Permission|Usage|
-|--|--|
-|`browser.history`|When opening receiver selection popup windows, the history log is polluted unless these entries are removed.|
-|`menus`|Display context menus for casting on pages/media, and whitelist menus on the toolbar button.|
-|`nativeMessaging`|Allows communciation with the bridge.|
-|`notifications`|Show notifications if a bridge issue is found on startup.|
-|`storage`|Store options data.|
-|`tabs`|Execute scripts within a sender application's tab content script context(possibly unnecessary due to host permissions).|
-|`webNavigation`|Get URL of frame to determine available cast media types.|
-|`webRequest`|Intercept and redirect Cast SDK requests.|
-|`<all_urls>`|Wildcard host permission (may want to switch to optional host permissions).|
+|Permission|Description|Usage|
+|--|--|--|
+|`browser.history`|Access browsing history|When opening receiver selection popup windows, the history log is polluted unless these entries are removed.|
+|`menus`|N/A|Display context menus for casting on pages/media, and whitelist menus on the toolbar button.|
+|`nativeMessaging`|Exchange messages with programs other than Firefox|Allows communciation with the bridge.|
+|`notifications`|Display notifications to you|Show notifications if a bridge issue is found on startup.|
+|`storage`|N/A|Store options data.|
+|`tabs`|Access browser tabs|Execute scripts within a sender application's tab content script context (possibly unnecessary due to host permissions).|
+|`webNavigation`|Access browser activity during navigation|Get URL of frame to determine available cast media types.|
+|`webRequest`|N/A|Intercept and redirect Cast SDK requests.|
+|`<all_urls>`|Acess your data for all websites|Wildcard host permission (may want to switch to optional host permissions).|