How to put a gif in a text post on Tumblr?

[SmoshiepiecrybuscusTV]

I want to add a gif with some text on my Tumblr and I clicked the upload photo button but the gif isn't there. It's just blank. Help please?

[Flavia]

It's easy-peasy my friend!
When I want put a pic or gif on my TEXT Post, before I host the image somewhere like eg Picasa Web, Photobucket or even on Tumblr.
The problem is that the "Text Post" requires that we already have the image hosted elsewhere. The easiest way is you open another post "Post Image" and climb the picture in this post, publish it in the reserved mode, just to see you.
After it is published, go to the post and just click on the image with the right mouse button and click "Copy image URL".
Now just paste the URL in place of the image to add your Text Post.

I hope I have helped.
Have a wonderful day.