A digital darkroom is like a magic room where you can change or improve pictures that you take with a camera or your phone. It's a special computer program that helps you adjust things like brightness, contrast, and color so that your pictures can look better.
Just like how you use crayons to color pictures on paper, you use the digital darkroom to color pictures on the computer. You can also add special effects, like making some parts of the picture blurry or adding sparkles to it.
Basically, it's a place where you can fix your pictures if they look too dark, too bright or if they need some extra help to look really beautiful.