import type { ImageMetadata } from "../types.ts";
export declare function isPng(b: Uint8Array): boolean;
export declare function readPngMetadata(b: Uint8Array): ImageMetadata;
export declare function writePngMetadata(b: Uint8Array, meta: ImageMetadata): Uint8Array;
export declare function removePngMetadata(b: Uint8Array): Uint8Array;