A stranger is already online
One click — and you're in a private chat. No sign-up.
In a dialog you can send the other person a photo — from the gallery or straight from the camera. It is part of the ordinary 1-on-1 chat: no sign-up, with privacy and service rules.
The photo is seen only by your partner in this dialog and is published nowhere. Once the dialog ends you cannot return to it: like the messages, the photo does not stay available to you in the service.
No, only your partner in this dialog receives it.
Yes, the photo button offers “Take a photo” or “From gallery”.
No, the whole chat and photo sending work without an account.
Yes, photos have a reasonable size limit — the service tells you if a file is too large.