Facebook is launching Messenger.com, a new web version of its
Messenger app. Facebook is using this site to promote the features of
its Messenger app, but it also allows users to chat with their friends
as similar to the Android app.
The launch of Messenger.com, Facebook is clearly planning to provide the Messenger Business
integration on the web. So, that non-mobile users can also use it
without facing any problem. But right now it seems like the third-party
app integration is now available. So, if you want to share any GIF then
you will have to do it as you were doing previously.
To get started on Messenger.com, just visit this link
and it will ask you to login with your Facebook account. After you do
that, you will see a similar chat interface as you were seeing on the
app.