About link previews
How HiYou shows a preview card for links sent in a chat.
When you send a message containing a web link, HiYou automatically shows a preview card with the page's title, description, and image where available. This happens automatically - there is no setting to turn it on or off, and no action needed when sending the link.
Link previews are not generated for messages sent with end-to-end encryption. Encrypted messages carry no extra metadata beyond the message content itself, so the sender's device does not attach a preview to them.