export declare const MAX_IMAGE_DIMENSION = 800;
export declare const MAX_FILE_SIZE: number;
export declare const BLANK_IMAGE_PLACEHOLDER = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
/**
 * Check if an image source is effectively blank (empty or placeholder)
 */
export declare function isBlankImageSrc(src: string | undefined | null): boolean;
export declare const resizeImage: (file: File, maxDimension: number) => Promise<{
    dataUrl: string;
    width: number;
    height: number;
}>;