The following operation is performed in order to make the image of GIF transparent on homepage builder.
About transparent-ized GIF
The image of GIF can specify arbitrary Isshiki as a transparent color. The portion of the color specified as a transparent color is displayed in a background color and the same color, when displayed on a browser. Therefore, if a background is white, it is white, and if it is red, since it is displayed red, it seems that the portion is transparent. It is displayed that as for a background in the case of images, such as wallpaper, the wallpaper is transparent and appears.
However, a thing to be careful is the point that only Isshiki can be specified as a transparent color here. Therefore, it is not fit for the image which is using many numbers of colors like a photograph. The whole domain to make it transparent needs to be smeared away in Isshiki.
Moreover, since the image of form other than GIF, such as JPEG, cannot carry out [ transparent ]-izing, after they change form into GIF first, it is necessary to make them transparent.