Sleazy Fork is available in English.
Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites
< Σχολιασμός για τον κώδικα Handy Image
added
After update not working for me.
Yes, I just remembered about Firefox compatability now ^_^
should be fixed now.
Add: img.bi
https://img.bi/#/dHu6jMG!Go_rqwWcyIzgoXvvOwb4LkewIwYtVwggLyPgn3My