import { type CompressOptions, type CompressResult } from "./types.js";
/**
 * Compress PNG image buffer.
 *  - Resize if larger than max dimensions
 *  - Convert to JPEG with iterative quality reduction if still too large
 *  - Optional `turbo` switch uses Sharp (5-10x faster) when available
 * Returns base64-encoded JPEG.
 */
export declare function compressScreenshot(pngBuffer: Buffer, options?: CompressOptions): Promise<CompressResult>;
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