To make all frames transparent, enter the '*' symbol. Frames that will be made transparent can be listed as '1, 2, 6' or specified as a range '2-5'. By default, the application makes all GIF frames transparent but if necessary, you can remove the color only in the specified frames. By increasing or decreasing the threshold value, you can control the transparent color's tint, tone, and shade. The color can be entered as a name ('blue'), hex or RGB code ('#0000FF' or 'RGB(0, 0, 255)'), or selected via the attached color palette in options. When you specify the color that should change to the transparent color, then it matches this color everywhere in the GIF. As a bonus, our app also allows making any GIF region transparent (not just the background). For example, if your GIF has a red background, then you can enter 'red' or hex code '#FF0000' in the transparent color field, and this red background will be assigned the transparent color index, which will make it disappear from the output GIF. This is a browser-based program that creates GIF animations with a transparent background.

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