import * as plugins from './smartpdf.plugins.js';
export interface ISmartPdfOptions {
    port?: number;
    portRangeStart?: number;
    portRangeEnd?: number;
}
export declare class SmartPdf {
    static readonly SCALE_SCREEN = 2;
    static readonly SCALE_HIGH = 3;
    static readonly SCALE_PRINT = 6;
    /**
     * Calculate scale factor for desired DPI
     * PDF.js default is 72 DPI, so scale = desiredDPI / 72
     */
    static getScaleForDPI(dpi: number): number;
    static create(optionsArg?: ISmartPdfOptions): Promise<SmartPdf>;
    private smartserveInstance;
    private smartnetworkInstance;
    serverPort: number;
    headlessBrowser: plugins.smartpuppeteer.puppeteer.Browser | null;
    externalBrowserBool: boolean;
    private _readyDeferred;
    private _candidates;
    private _options;
    private _isRunning;
    constructor(optionsArg?: ISmartPdfOptions);
    start(headlessBrowserArg?: plugins.smartpuppeteer.puppeteer.Browser): Promise<void>;
    stop(): Promise<void>;
    private getBrowser;
    /**
     * Returns a PDF for a given HTML string.
     */
    getA4PdfResultForHtmlString(htmlStringArg: string): Promise<plugins.tsclass.business.IPdf>;
    getPdfResultForWebsite(websiteUrl: string): Promise<plugins.tsclass.business.IPdf>;
    getFullWebsiteAsSinglePdf(websiteUrl: string): Promise<plugins.tsclass.business.IPdf>;
    mergePdfs(inputPdfBuffers: Uint8Array[]): Promise<Uint8Array>;
    readFileToPdfObject(pathArg: string): Promise<plugins.tsclass.business.IPdf>;
    extractTextFromPdfBuffer(pdfBufferArg: Buffer): Promise<string>;
    /**
     * Converts a PDF to PNG bytes for each page using Puppeteer and PDF.js.
     * This method creates a temporary HTML page that loads PDF.js from a CDN,
     * renders each PDF page to a canvas, and then screenshots each canvas element.
     */
    convertPDFToPngBytes(pdfBytes: Uint8Array, options?: {
        scale?: number;
        maxWidth?: number;
        maxHeight?: number;
    }): Promise<Uint8Array[]>;
    /**
     * Converts a PDF to WebP bytes for each page.
     * This method creates web-optimized images using WebP format.
     * WebP provides 25-35% better compression than JPEG/PNG while maintaining quality.
     */
    convertPDFToWebpBytes(pdfBytes: Uint8Array, options?: {
        scale?: number;
        quality?: number;
        maxWidth?: number;
        maxHeight?: number;
    }): Promise<Uint8Array[]>;
    /**
     * Converts a PDF to progressive JPEG bytes for each page.
     * This method creates progressive JPEG images that load in multiple passes,
     * showing a low-quality preview first, then progressively improving.
     * Uses SmartJimp for true progressive JPEG encoding.
     */
    convertPDFToJpegBytes(pdfBytes: Uint8Array, options?: {
        scale?: number;
        quality?: number;
        maxWidth?: number;
        maxHeight?: number;
    }): Promise<Uint8Array[]>;
}