/**
 * Converts an image file to WebP format
 * @param file Original image file
 * @param quality Quality of the WebP image (0-1)
 * @param maxWidth Maximum width of the output image
 * @returns Promise that resolves to a File object in WebP format
 */
export declare const convertToWebP: (file: File, quality?: number, maxWidth?: number) => Promise<File>;
/**
 * Gets the size of a file in a human-readable format
 * @param bytes Size in bytes
 * @returns Formatted size string (e.g., "1.5 MB")
 */
export declare const getFormattedFileSize: (bytes: number) => string;