Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Screenshot Creator Free.
Screenshot Creator v1.4.5.3
Screenshot Creator is a tool for creating screenshots at any resolution, even super HD, within the Unity Editor.
Features:
o Quickly create good high quality screenshots
or wallpapers.
o Take multiple screenshots at multiple
resolutions with a single click
o Multiple image overlays
o Take screenshots using any camera at all, even
the Scene View (great for collaboration
and information sharing).
o Scaling of screenshot resolution (for external
resizing) allowing for more detailed renders.
o Real-time preview and following of the scene
camera allowing you to perfectly & precisely
place your cameras for screenshots.
Please note: There is currently a known bug within Unity itself preventing non-world-space UI items from being captured. See This Forum Post for more information. Once Unity’s Developers fix this bug UI elements should be captured correctly.