Optionalis_True, if the link preview is disabled.
Optionalprefer_True, if the media in the link preview is supposed to be enlarged; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview.
Optionalprefer_True, if the media in the link preview is supposed to be shrunk; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview.
Optionalshow_True, if the link preview must be shown above the message text; otherwise, the link preview will be shown below the message text.
OptionalurlURL to use for the link preview. If empty, then the first URL found in the message text is used.
Describes the options used for link preview generation.
See
Telegram Bot API: LinkPreviewOptions