Your screenshot feature is too hidden and hard to find. You should learn from Edge, which puts the screenshot feature in a place where it can be easily discovered
Thanks @wutongtaiwan! The screenshot feature can be added to the toolbar via the 'Customize toolbar...' options, but you're right it is a bit hidden. I'll pass this feedback/idea along.
I disagree with suggested: "adding screenshot function to menu". It would result in additional clutter for all user, without the ability to be removed by users.
Instead, functionalities such as the screenshot tool, and the ability to customize the menu bar, should be pointed out in the onboarding process on installation.
Additionally, firefox tools and featues (e.g. screenshot tool, ...) could be made more accessible, when adding a search capability for such tools to the already established (super) search bar of firefox (like in some code editors). Providing a single source for discovering firefox capabilities. In combination with a keyword (=search provider; already interested in firefox), users could even search exclusively for firefox features/tools or could disable feature/tool discoverability via the search bar settings (also already existing).
@Ford_Prefect I don't think a slight modification in the menu would lead to confusion. If you don't put some useful features in a prominent place, users won't know that there is such a function. Just a slight change to the menu, the change is not much, and the adverse effect on the user is very slight