OptionalbgThe background colour of the image (transparent by default).
OptionalfullWhether to export the current viewport view (false, default) or the entire graph (true).
OptionalmaxSpecifies the scale automatically in combination with maxWidth such that the resultant image is no taller than maxHeight.
OptionalmaxSpecifies the scale automatically in combination with maxHeight such that the resultant image is no wider than maxWidth.
Optionaloutputoutput Whether the output should be 'base64uri' (default), 'base64', 'blob', or 'blob-promise'.
OptionalscaleThis value specifies a positive number that scales the size of the resultant image.
http://js.cytoscape.org/#core/export