/**
 * Information extracted from a PNG file.
 */
export type PngInfo = {
    width: number;
    height: number;
    /** Number of color components: 1 (grayscale) or 3 (RGB). */
    numComponents: 1 | 3;
    bitsPerComponent: number;
    imageData: Uint8Array;
    alphaData?: Uint8Array;
    /** Raw ICC profile data extracted from the iCCP chunk, if present. */
    iccProfile?: Uint8Array;
};
/**
 * Parses PNG file to extract image data suitable for PDF embedding.
 *
 * PNG files consist of chunks, each with a 4-byte length, 4-byte type,
 * data, and 4-byte CRC. The IHDR chunk contains image metadata,
 * IDAT chunks contain the compressed image data, and PLTE contains
 * the palette for indexed color images.
 */
export declare function parsePng(data: Uint8Array): PngInfo;