Automated PSD to HTML service is now able to extract images from Photoshop template in GIF format.Most widespread image formats used in web development are PNG and JPG formats. JPG format allows to get file of lower size, however it does not support transparency. PNG format allows transparency, but saved image usually have bigger size. In some cases GIF format is still used for images. Usually, it is good only for images of low dimensions, such as icons. It should be noted that GIF format does not support alpha transparency, it is only possible to show fully transparent pixels.
To extract image in GIF format it is needed to add tag #gif to the corresponding layer in PSD template.