Interface ChartImageOptions

interface ChartImageOptions {
    background?: string;
    format?: ChartImageFormat;
    overlay?: boolean;
    pixelRatio?: number;
    quality?: number;
}

Properties

background?: string

'theme' (default): the theme surface; 'transparent': alpha background (JPEG flattens it to black); any CSS color.

Default 'png'

overlay?: boolean

Composite the DOM overlay (title, legend, axes); default true

pixelRatio?: number

Output pixels per CSS pixel (default: the canvas' current ratio). Re-renders at that size.

quality?: number

JPEG / WebP quality 0-1 (browser default when omitted)