/**
 * Information extracted from a JPEG header.
 */
export type JpegInfo = {
    width: number;
    height: number;
    /** Number of color components: 1 (grayscale), 3 (RGB), or 4 (CMYK). */
    numComponents: 1 | 3 | 4;
    bitsPerComponent: number;
    /** Raw ICC profile data extracted from APP2 markers, if present. */
    iccProfile?: Uint8Array;
};
/**
 * Parses JPEG header to extract image dimensions and color space.
 *
 * JPEG files consist of segments, each starting with 0xFF followed by a marker byte.
 * The SOF (Start of Frame) markers (0xC0-0xCF, excluding 0xC4, 0xC8, 0xCC) contain
 * the image dimensions and component information.
 */
export declare function parseJpeg(data: Uint8Array): JpegInfo;