(I hope this doesn't get unsupported again, I take your comments for granted!)
I have this idea whenever you upload a .GIF image for a costume that its frames are uploaded in costumes. This is to cut the time on how you will need to convert .GIF files into separate frames.

another guy wrote:

“..no easy alternatives..”

Support! This feature was in 1.4

I agree when i upload gifs to costumes it get a little white and black.Well the first image is normal but the other ones not so much

I thought they can already do that.

I think it works on some and some not

It's possible! Just locate the image and import it. No need to create a new sprite! this works with me (

Whenever I import a gif it already comes out as a bunch of costumes.

oh okay. The last time I tried it It did not work. I'm going to add sonic X-treme sprites.
EDIT: The sprites are actually in Paintbrush format… It's a program for the macintosh computer and I'm using windows. I really can't open these files.

How do u actually make a GIF appear in ur projects?

DuncVader wrote:

I agree when i upload gifs to costumes it get a little white and black.Well the first image is normal but the other ones not so much

Yeah, I get a little transparent fuzz in the frames.

Mozzi64 wrote:

DuncVader wrote:

I agree when i upload gifs to costumes it get a little white and black.Well the first image is normal but the other ones not so much

Yeah, I get a little transparent fuzz in the frames.

Your answer lies here.
http://scratch.mit.edu/projects/19331893

.Gifs are awsome :> and its cool that you can cross out letters that you type

i have no idea how to do this BUT I HATE YOUR CAKE THE POINT IS HAVE NO IDEA

Support.
Although from what others have said, I think some work and some don't.

Support! It doesn't work for me, but it does for other people.

Mm, it depends what kind of GIF it is.

I think this suggestion is pointless because .gif images are already converted to costumes in scratch 2.0. Closing topic.