Manipulating clipboard image properties

[Aolei]

I notice a difference between these two scenarios:
1. Capture section of Screen using OneNote screen grabber
2. Paste into OneNote

1. Capture section of Screen using OneNote screen grabber
2. Import Clipboard to XnView
3. Copy image in XnView
4. Paste into OneNote

I like the latter additional steps in XnView because when I paste the graphic it is physically smaller (without apparent loss of resolution... I can enlarge it later or paste into another application).
I presume what the additional import/copy in XnView is doing is setting a different dpi on the image. I think it may also have other benefits in that in some scenarios (paste into Outlook?) it results in more compact emails? (perhaps stored as PNG instead of converted to JPG?).

So what I am thinking is there might be a way with NConvert to avoid the tiresome manual steps 2. and 3. in the second scenario and just modify the clipboard image properties in a single operation (perhaps even triggered by double-clicking a shortcut, or using a hotkey).

Any ideas? A better way to do this?