: Drop shadow for animated GIF Briefly I don't know, how I can to make shadow effect for animated GIF. For me good solution in any open source/free program, not Photoshop. Detail For PNG images

@Dunderdale640

Simply, larger you document, add a background color as the background color where the GIF will placed, than add your shadow to your GIF, this is the only way.

If your output will for the web, you can add a CSS property to it and will looks like more and more better than export the shadow in the GIF directly (will be more HD)

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@Dunderdale640

For GIF the drop shadow is going to be complicated for two reasons:


The drop shadow on your PNG relies on partial opacity to blend the shadow with the page background. But the GIF format doesn't support that, in GIF the opacity a pixel is either completely opaque or completely transparent. You can at best simulate a blend to a background of a specific color using Layer>Transparency>Semi-flatten
The semi-flatten above will create a lot of intermediate tones that will be included in the 256-color limit of GIF and reduce the number of colors available elsewhere (for the anti-aliasing of the edges of text for instance). This will have a negative impact on the overall image quality.

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