View Source ExTDLib.Object.ProfilePhoto (ExTDLib v0.0.4)

Describes a user profile photo.

NameTypeDescription
idstringPhoto identifier; 0 for an empty photo. Can be used to find a photo in a list of user profile photos.
smallfileA small (160x160) user profile photo. The file can be downloaded only before the photo is changed.
bigfileA big (640x640) user profile photo. The file can be downloaded only before the photo is changed.
minithumbnailminithumbnailUser profile photo minithumbnail; may be null.
has_animationboolTrue, if the photo has animated variant.
is_personalboolTrue, if the photo is visible only for the current user.

More details on telegram's documentation.