GIPHY offers a one-click solution to turn any GIF into a perfectly looped fifteen-second .mp4 for you to upload directly to Instagram.
Click on the Instagram icon below any GIF. The GIPHY Glove will present you with an email form. Enter your email and hit send.
GIPHY will email you a .mp4 version of your GIF. Download the .mp4 onto your phone and upload to your Instagram. GIFs inside Instagram! (You can also use the same .mp4 and upload it to Vine!)