Hey Gfacekilla,
The wallpaper transparency option in Opera depends on the version of Opera you're using and whether your system supports transparency effects. On some devices (especially lower-spec or older systems), this feature may not appear.
To check, go to Easy Setup (top-right corner of Opera) → scroll down to Wallpaper → see if the “Use transparent wallpaper” toggle is available. If it’s missing, make sure you’re on the latest version of Opera, and try enabling transparency effects in your Windows display settings too (especially if you’re on Windows 10 or 11). Let us know your OS and Opera version if it’s still not showing.
Regards