import { Marp } from '@marp-team/marp-core';
export declare const renderRouter: import("express-serve-static-core").Router;
/**
 * Convert SVG background-images to <img> tags in Marp's rendered HTML.
 * SVGs in CSS background-image lose internal references (markers, filters, gradients)
 * because browsers render them in a restricted context. Using <img> instead loads the
 * SVG as a full document where all references resolve correctly.
 */
export declare function convertSvgBackgrounds(html: string): string;
declare function createMarpInstance(): Promise<Marp>;
export { createMarpInstance };