TIL: Use "Invisible Ink" for spoilers in iMessage

Earlier this week I remarked to a friend that I wish iMessage had spoiler formatting like Discord. They responded

Screen recording of invisible ink text effect in iMessage, then revealing the text "But it does!!!"

What!? Woah!

I used to be on the vanguard of new features in macOS/iOS but maybe that day has passed. To send a message with this effect (which applies to the entire message, not selectively), you long press on the send button and select the “Invisible Ink” effect.

Screenshot of how to select Invisible Ink in iMessage "Send with Effect" screen. The option is highlighted with a red box next to the sample message "Dumbledore is Snape's father"

It also works on pictures.

iOS