Much like the GIF button in Facebook Messenger, the new GIF comments are sourced from Facebook's GIF partners, including Giphy, Tenor, and Disney. Importantly, there are a few limitations.

Meta, the parent company of Instagram, WhatsApp and Facebook, continues to work ... by Meta to help increase the efficiency of Messenger. /gif will be added soon on iOS. “GIFs help us express ...

Meta is also working on the ability to search and send GIFs to groups and users on Messenger by using the /gif command. These new Shortcuts features will be available for Facebook Messenger users ...