You can determine whether the partially transparent pixels become transparent or opaque, and whether they are blended with another color. Original images may contain partially transparent pixels if the image does not have a background layer, and you have reduced the opacity of a layer, added a mask, feathered a selection, or used a brush at a reduced opacity setting. All pixels must be either transparent or opaque (visible). If you have a selection in your image, you can base the transparency on the selection.Ī GIF file cannot contain partially transparent pixels. You can choose to base transparency on existing image or layer transparency, or you can sample a color in the image that you want to make transparent. The fifth tabbed area displays estimated download times of the image at various modem speeds. The GIF Optimizer dialog box contains four tabbed areas in which to configure the transparency, color, and format options of the file. Most Web browsers support this option, effectively making that color transparent. In this case, you can choose not to display one color. For example, you may have a round logo and want to display the background of the Web page around the logo. Paletted images (those with 256 or fewer colors, such as GIF or PNG files) do not support transparent backgrounds, but you often need to make part of your image transparent for a Web page. You can save images with or without transparency, depending on how you want to display them on your Web pages. Corel PaintShop Pro Help : Creating images for the Web : Working with GIF filesĬorel PaintShop Pro lets you optimize GIF files to maximize quality while minimizing file size.

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