So the short bond paper size in pixels depends on the resolution of the document. There's no fix equivalent of the short bond paper size (8.5" x 11") in pixels.
If you will use photoshop, it's very easy to get the equivalent in pixels of the short bond paper.
Here's how to do it.
Open your Photoshop and click New.
Then a small window will pop-up which is the Photoshop document settings (the presets, size and resolution settings).
In the Preset, choose the U.S. Paper.
In the Size, choose Letter.
The Letter size is equivalent to the short bond paper size having a corresponding size:
- 8.5 inches - the width
- 11 inches - the height
To change 8.5 inches x 11 inches size into pixels, just click the inches selector in the Width or Height and change it into pixels.
And here's the equivalent pixels of the short bond paper size: