Help:Fire Simulation looks Thin When Saving As Image PNG?

Hey guys, so i was trying to render a fire simulation.

the Rendered View and Render Result looked OK.

but when i click Image and Save As

The rendered result looks thin (to the point that it just looks like a smoke to nothing) when i open it in windows photoviewer or photoshop

thanks in advance

Try putting it on a darker background closer to the gray of blender.