export interface PngSize {
    width: number;
    height: number;
}
/**
 * Read a PNG's pixel dimensions from its IHDR chunk.
 *
 * @throws if the file is missing or not a PNG (signature / IHDR mismatch).
 */
export declare function readPngSize(path: string): Promise<PngSize>;
/** Parse PNG dimensions from an in-memory buffer (the IHDR is always first). */
export declare function parsePngSize(buf: Buffer, label?: string): PngSize;
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