MyBBHacks.com Plugins for MyBB

The photo is much too large at maximum size.
How can I zoom out?

[attachment=292]

Photo is way too big! How can I reduce it by about 50%?
[attachment=293]

[attachment=294]

Is that when clicking the image on the image display page?
And what device are you on?

yes
Browser:  Firefox and Vivaldi

PC  (It is the same with laptops)

On both the full screen is