Hello fasderrally,

You mention "magnifying glass" - are you talking about this add-on :

https://addons.mozilla.org/en-US/firefox/addon/magnifying-glass-hover-zoom/  ?

If so : if it doesn't work, would you please contact the developer  ?

This may not be one of my brightest moments, but I wonder why you don't use the Ctrl key plus the minus key (-) to zoom out, and the Ctrl key and plus key (+) to zoom in  ?

No, I mean the fit to screen abilty, like in any brower

And i don't use the zoom in and out because it should fit to screen automaticly, and zoom in and out with M1. It's much more comfortable.

Can you zoom the image in and out with the zoom control or the keyboard shortcuts (Ctrl and +/-)?

You can try to modify these prefs on the about:config page to see if that has effect.

• browser.enable_automatic_image_resizing
• browser.enable_click_image_resizing

if this didn't work then undo/reverse the change and reset via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

• http://kb.mozillazine.org/about:config

You are a Genius! Thank you very much

fasderrally said

And I don't use the zoom in and out because it should fit to screen automatically, and zoom in and out with M1. It's much more comfortable.

I use the browser's click on image = Full Size, click again to Fit the Browser Window. That was 'broken' for you?

~Pj