Decrease brightness button

As suggested by Daniel de Groot :

I would like to suggest adding ‘decrease brightness’ button or change to slider.

There is currently only ‘increase brightness’ button. (which is much more commonly needed)

Might help with images like

https://api.panoramax.xyz/?focus=pic&map=24/52.6888957/-7.5002055&pic=db315245-a7d8-4151-a1e3-01fdfc30ea3c&speed=250&xyz=161.59/-2.88/85

Button would be ‘nice to have’. It is understandable if this should be done by downloading and using image application instead.