Images in JPG or PNG format
When you capture an image with Gyazo, the format of the image saved depends on the size of the image.
Gyazo first captures in PNG format, but if the captured PNG file size exceeds 1MB, it will be automatically converted to JPG format.
Gyazo cannot change this image format or specify the format in advance to capture.
These are the only two image formats supported by Gyazo at this time.