import { InputFileUnion } from './index';
export declare type InputThumbnailUnion = InputThumbnail;
/**
 * A thumbnail to be sent along with a file; should be in JPEG or WEBP format for stickers,
 * and less than 200 kB in size
 */
export interface InputThumbnail {
    _: 'inputThumbnail';
    /** Thumbnail file to send. Sending thumbnails by file_id is currently not supported */
    thumbnail: InputFileUnion;
    /** Thumbnail width, usually shouldn't exceed 320. Use 0 if unknown */
    width: number;
    /** Thumbnail height, usually shouldn't exceed 320. Use 0 if unknown */
    height: number;
}