Why the share preview shows old text or an old photo

Messenger, Zalo and others cache link previews. If you change a name, a date or the cover photo after sharing, the old preview card can keep showing for a while.

This is not a fault in your invitation. The card itself updates much sooner than the preview does.

Before worrying, copy the link from the Share button and open it directly in a browser.

If the page shows your new content, the invitation is fine and only the chat preview is stale. If you do not see the change yet, wait a moment and reload the page.

The editor has a section just for the social share preview. This is the picture that appears beside the link in a chat bubble.

Pick a photo where your faces are clear and there is no small text. The preview is scaled down a lot, so fine print will not be readable.

The old preview is already baked into the message you sent, and it will not change by itself. Send the link again in a fresh message after waiting a little.

If the app has its own link-checking tool, you can also use that to force the preview to be fetched again.

Finish the names, date, venue and cover photo before you share for the first time. The preview is built the first time the link goes out.

If you do need to edit after sending to a few people, go ahead. Only those who already received the link see the old preview; anyone you send it to afterwards gets the new one.