Upload one image, or several for a carousel (up to 20). Crop to a feed size, write the description under the image, then download.
The description stops at 2,200 characters, which is as long as an Instagram caption can be. One description covers a carousel. Each image can have its own when you post them separately.
Stops at 2,200 characters. Instagram hides the rest behind More after about 125.
1080 × 1350 px · Portrait 4:5