Reason for vast permissions? Rated 3 out of 5 stars

I love your add-on, use it all the time. However, it seems that one doesn't need someone's login data to capture a screen...would you be able to let us know what each permission means that is required? Thanks for your time!

This review is for a previous version of the add-on (2.2). 

> Access your data for all websites
> Access browser tabs

for screen capture, mode: "full screen/frame" and "selection"

> Input data to the clipboard

for mode "copy image to clipboard"
option "save to clipboard" available only for Firefox 57
Firefox 57 will be available in November 2017

> Download files and read and modify the browser’s download history

for mode "save image"

> Display notifications to you

notifications for mode "copy" and "upload"

> Store unlimited amount of client-side data

for storing extension settings and for temporary blob-images in the "preview" mode