/**
 * PDF Format Handler
 *
 * Reads PDFs as markdown and writes markdown to PDFs.
 * Handles embedded images and metadata extraction.
 */
export interface PDFReadOptions {
    asMarkdown?: boolean;
    includeImages?: boolean;
    extractMetadata?: boolean;
}
export interface PDFWriteOptions {
    title?: string;
    author?: string;
    subject?: string;
    keywords?: string[];
    fontSize?: number;
    margins?: {
        top: number;
        bottom: number;
        left: number;
        right: number;
    };
}
export interface PDFContent {
    text: string;
    metadata?: {
        title?: string;
        author?: string;
        subject?: string;
        keywords?: string;
        creator?: string;
        producer?: string;
        creationDate?: Date;
        modificationDate?: Date;
        pageCount?: number;
    };
    images?: Array<{
        page: number;
        data: Buffer;
        format: string;
    }>;
}
/**
 * Read PDF file and convert to markdown with optional image extraction
 */
export declare function readPDF(filePath: string, options?: PDFReadOptions): Promise<PDFContent>;
/**
 * Create PDF from markdown content
 */
export declare function writePDF(filePath: string, content: string, options?: PDFWriteOptions): Promise<void>;
/**
 * Get PDF metadata without reading full content
 */
export declare function getPDFMetadata(filePath: string): Promise<PDFContent['metadata']>;
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