File > Export > Make Canvas Picture

Exports the sketch image plane in the active view as an image file.

Exporting a picture exports a file of the same pixel dimensions as the image plane. To see the image plane’s dimensions, choose Edit > Sketch Properties from the Paint Layer Editor.

Make Picture Options

File Type: The file format in which the exported image will be saved: JPEG, TIFF, 32 bit BMP, or PSD (Photoshop).
Limit image size: When this option is checked, two sliders appear to adjust the Horizontal and Vertical size of the image in pixels. The sliders initially represent the maximum dimensions of the image. If the image exceeds either the horizontal of vertical maximum, it is scaled down, while preserving the aspect ratio, to fit within the specified dimensions.

Note
Images cannot be enlarged, only reduced in size.
Horizontal size: Maximum width of the image in pixels.
Vertical size: Maximum height of the image in pixels.
Quality level: This option only appears when the File type is jpeg.

Use the pull-down menu (Maximum, High, Medium or Low) or the slider (values from 1 to 100) to adjust the quality of the jpeg image. A higher quality will result in a larger file size.
Blend with background color: This option only appears when the File type is tiff or bmp(32bits).
Convert mask to image layer: This option only appears when the File type is psd.

Turn on this option to convert all the mask and invisibility mask layers to image layers, so that they are saved in the PSD file. If this option is turned off, mask and invisibility mask layers are ignored.