The following operation is performed in order to change the image of the existing GIF into interlace GIF.
The following operation is performed in order to change the image of the existing JPEG into progressive JPEG.
About interlace GIF and progressive JPEG
While displaying the image by the browser, it may be displayed in the shape of a mosaic, and a clear picture may be displayed gradually in the beginning. Such an effect can be given to the image of GIF and JPEG and it is called in ^[X GIF and progressive JPEG to it, respectively. Since the rough outline of an image is first known when the late circuit is being used, if the reason made into such form is unnecessary any more, it is because a circuit can be cut.