By default Nebulb sets the original dimensions of the image for the export, although it is possible to change them so that the exported image has a larger or smaller size than the original (depending on what you want).
To do this, within the "Export Images" module you have a specific section to adjust the size you want the exported image to have.
In this section you can:
- Set by hand the dimensions (width or height) you want the image to have.