/**
 * Base64 encoding/decoding utilities for SVG
 */
/**
 * Converts an SVG element or SVG string to a Base64-encoded data URI
 */
export declare function convertSVGToBase64(svgContent: Element | string): string;
/**
 * Converts a Base64-encoded data URI back to an SVG string
 */
export declare function convertBase64ToSVG(base64String: string): string;