/**
 * Comprehensive image compression service for React Native
 * Supports iterative compression to meet specific size targets
 */
interface CompressionOptions {
    maxSizeKB?: number;
    maxWidth?: number;
    maxHeight?: number;
    quality?: number;
    format?: 'JPEG' | 'PNG' | 'WEBP';
}
interface CompressionResult {
    success: boolean;
    base64?: string;
    sizeKB?: number;
    originalSizeKB?: number;
    compressionRatio?: number;
    error?: string;
}
/**
 * Compress image with iterative quality reduction to meet size target
 */
export declare const compressImageToTarget: (imageUri: string, options?: CompressionOptions) => Promise<CompressionResult>;
/**
 * Quick compression for profile pictures (300KB target)
 */
export declare const compressProfilePicture: (imageUri: string) => Promise<CompressionResult>;
/**
 * Compress image for upload with custom settings
 */
export declare const compressForUpload: (imageUri: string, maxSizeKB?: number) => Promise<CompressionResult>;
/**
 * Legacy function for backward compatibility
 */
export declare const convertImageToOptimizedBase64: (imageUri: string, quality?: number) => Promise<string | null>;
export {};
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