Easy way to change a map's projection?

[Imperator Frank]

I'm working on a map of a fictional world and the map is just a rectangle right now, but I wanna know how I could turn it into the same map projection as worlda maps (which I think is robinson, not exactly sure). Anyone know of a way to do this easily?

 

[Chicxulub]

Nope. filler

 

[Penelope]

GProjector ought to do the trick.

 

[Imperator Frank]

GProjector ought to do the trick.

Thank you, that's perfect.

 

[Tallest Skil]

[requires Java]

Yeesh. Is there anything else?