/**
 * PDF converter module
 * Handles conversion of PPTX files to PDF using various methods
 */
/**
 * PDF conversion options
 */
export interface PdfConversionOptions {
    inputPath: string;
    outputPath?: string;
    method?: 'libreoffice' | 'puppeteer' | 'native';
    quality?: 'low' | 'medium' | 'high';
    timeout?: number;
}
/**
 * PDF converter class
 */
export declare class PdfConverter {
    private converters;
    constructor();
    /**
     * Initialize available converters
     */
    private initializeConverters;
    /**
     * Convert PPTX to PDF
     */
    convert(options: PdfConversionOptions): Promise<void>;
    /**
     * Convert using LibreOffice
     */
    private convertWithLibreOffice;
    /**
     * Convert using Puppeteer (requires additional setup)
     */
    private convertWithPuppeteer;
    /**
     * Convert using native PowerPoint (Windows/Mac)
     */
    private convertWithNative;
    /**
     * Convert using PowerPoint on Windows
     */
    private convertWithPowerPointWindows;
    /**
     * Convert using PowerPoint on macOS
     */
    private convertWithPowerPointMac;
    /**
     * Check available conversion methods
     */
    getAvailableMethods(): Promise<string[]>;
    /**
     * Install LibreOffice instructions
     */
    static getInstallInstructions(): string;
}
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