/**
 * Normalize a 0-100 quality value to the library-specific parameter.
 *
 * | Format   | Input 0-100 → Output                    |
 * |----------|------------------------------------------|
 * | jpg/webp | 0.0-1.0 (Canvas quality)                |
 * | avif     | 0.0-1.0 (Canvas quality)                |
 * | png      | OxiPNG level 1-6 (future)               |
 * | gif      | maxColors 2-256                          |
 * | others   | N/A (returns undefined)                  |
 */
declare function normalizeQuality(format: string, quality: number | null | undefined): number | undefined;
/**
 * Get compression metadata for a format.
 */
declare function getCompressionMeta(format: string): {
    hasQuality: boolean;
    qualityLabel: string;
};

export { getCompressionMeta, normalizeQuality };