/**
 * The JPEG options
 */
type JpegOptions = {
    /**
     * If true, enables progressive JPEG compression
     */
    progressive?: boolean;
    /**
     * If true, chrominance sub-sampling is disabled
     */
    noSubsample?: boolean;
    /**
     * If true, enables trellis quantization for each
     * 8x8 block
     */
    trellisQuant?: boolean;
    /**
     * If true, enables overshooting of samples with
     * extreme values
     */
    overshootDeringing?: boolean;
    /**
     * If true, split the spectrum of DCT coefficients
     * into separate scans
     */
    optimizeScans?: boolean;
    /**
     * Quantization table to use
     *
     *     0: Table from JPEG Annex K (default);
     *     1: Flat table;
     *     2: Table tuned for MSSIM on Kodak image set;
     *     3: Table from ImageMagick by N. Robidoux;
     *     4: Table tuned for PSNR-HVS-M on Kodak image set;
     *     5: Table from Relevance of Human Vision to JPEG-DCT Compression (1992);
     *     6: Table from DCTune Perceptual Optimization of Compressed Dental X-Rays (1997);
     *     7: Table from A Visual Detection Model for DCT Coefficient Quantization (1993);
     *     8: Table from An Improved Detection Model for DCT Coefficient Quantization (1993).
     */
    quantizationTable?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8;
};
/**
 * Allows redefining JPEG saving options.
 *
 * See https://github.com/imgproxy/imgproxy/blob/6f292443eafb2e39f9252175b61faa6b38105a7c/docs/generating_the_url.md#jpeg-options-idjpeg-options for the imgproxy documentation
 *
 * @param options  The jpeg options
 * @returns        The jpeg option param string
 */
declare const jpegOptions: (options: JpegOptions) => string;
export default jpegOptions;
export { JpegOptions };