Action Details
Requirements and how-to articles for Tumblr's action:

Post an animated GIF image on Tumblr.

You need this to get it done:

Animated GIF Image
File format: .gif
Maximum file size: 3MB
Maximum width: 540 pixels
Requirements missing or found errors? Report

How-To Articles
A list of useful links for you:

Tumblr Help Center - Photo Posts
When you are logged in to Tumblr, navigate to the homepage (a.k.a. the "Dashboard") and at the top of the page next to your blog's avatar you should see a list of different types of media. Click "photo" and then choose whether you wish to upload a photo or use which has already been uploaded elsewhere.
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