Optional
bgThe background colour of the image (transparent by default).
Optional
fullWhether to export the current viewport view (false, default) or the entire graph (true).
Optional
maxSpecifies the scale automatically in combination with maxWidth such that the resultant image is no taller than maxHeight.
Optional
maxSpecifies the scale automatically in combination with maxHeight such that the resultant image is no wider than maxWidth.
Optional
qualityquality Specifies the quality of the image from 0 (low quality, low filesize) to 1 (high quality, high filesize). If not set, the browser's default quality value is used.
Optional
scaleThis value specifies a positive number that scales the size of the resultant image.
http://js.cytoscape.org/#core/export