Crop before you add text
Captions are placed relative to the cropped frame, so crop first and your text will be sized for the final shape.
Cut away the edges you do not need. Pick an aspect ratio — square for avatars and emoji, 9:16 for stories, 16:9 for widescreen — then drag the frame to position it on the subject.
Drop the GIF.
Choose a shape and drag to position the crop.
Make the GIF.
Captions are placed relative to the cropped frame, so crop first and your text will be sized for the final shape.
No. The GIF is decoded, edited and re-encoded inside your browser. Nothing is sent to a server, so there is no account, no queue and no watermark.
GIF frames are always rectangles. Discord and Slack crop avatars to circles themselves, so a centred square crop is what you want.