/** Minimal PDF writer — zero dependencies (Phase 10). */
export interface PdfImagePage {
    /** Raw JPEG bytes (DCTDecode) */
    jpeg: Uint8Array;
    width: number;
    height: number;
}
/** Build a multi-page PDF embedding JPEG images. */
export declare function buildPdfFromJpegPages(pages: PdfImagePage[]): Uint8Array;
/** Encode PDF bytes as base64 data URI. */
export declare function pdfToDataUrl(pdf: Uint8Array): string;
/** Decode base64 data URL to bytes. */
export declare function dataUrlToBytes(dataUrl: string): Uint8Array;
/** Minimal JPEG stub with valid SOI/EOI markers for PDF structure tests. */
export declare function createMinimalJpegStub(width: number, height: number): Uint8Array;