/**
 * Compresses each page of a provided PDF buffer.
 * @param pdfData The input PDF as a Buffer.
 * @param imageQuality Compression quality (70-100 for most JPG images).
 * @param forceSourceTextCompression If true, attempts to re-write detected text.
 * @param disableSourceText If true, doesn't re-apply source text to the output PDF.
 * @returns A Promise resolving to the compressed PDF as a Buffer.
 */
export declare function compressPdf(pdfData: Buffer, imageQuality?: number, forceSourceTextCompression?: boolean, disableSourceText?: boolean): Promise<Buffer>;