You can sign in with Firefox Accounts to sync all your screenshots across devices and access them privately.
Yatikïr natikirisaj molojri'ïl pa ri Rub'i' Taqoya'l richin Firefox richin ye'axïm konojel ri chapoj kiwäch taq awokisaxel chuqa' richin ichinan rub'eyal yatok chi kipam.