Click on the old map to add a point.

Overlay opacity 75%

Move the sliders — changes apply to the overlay immediately.

Sharpen 0 Contrast 1.00 Brightness 0

Filters: waiting for preview…

Higher zoom = more detail and bigger file. For an old map, "overview + district" is usually enough.

Minimum (far): district (z=9) Maximum (close): streets (z=14)

Create a binding first.

📥 Upload a map image