import type { AcceptedImageOutputFormats } from '../data.js';
export type PictureOptimizeProps = {
    width?: number;
    height?: number;
    quality?: number;
    position?: string;
    fit?: string;
    background?: string;
    customName?: string;
};
export type ImageOptimizeProps = PictureOptimizeProps & {
    preload?: 'prefetch' | 'preload';
    format?: AcceptedImageOutputFormats;
};
export declare function toOptimizedURL(url: string, optimizeOptions?: PictureOptimizeProps & {
    format?: AcceptedImageOutputFormats;
}): string;