The advantage of this second method is that it is entirely non-destructive, and you can fine tune as much as you like. (NOTE: If you used the option to place a temporary background below this layer, turn that off before copying so that all you retain the transparency.) Select All (Ctl/Cmd-A) and Copy Merged (Ctl/Cmd-Shift-J), then paste wherever you need the new layer with transparent background. In the "Blend If" section, drag the "This Layer" black slider to the right to remove the completely black background, then hold down Alt (Option on Mac) and drag the right half of that slider further to the right until you see the effect you're looking for: Optionally, place a layer below with the color you expect you'll be using in any final composite (e.g., a background color or image on a website) so you can see exactly what things will look like.ĭouble-click the new layer thumbnail to open the Blending Options dialog. Iterate these steps using different fuzziness settings until you have what you want.Ĭopy your image to a new layer. Click OK.Ĭopy the selection to a new layer using Layer > New Layer via Copy or the keyboard shortcut Ctl/Cmd-J. Uncheck "Localized Color Clusters".Īdjust the "Fuzziness" slider until your grayscale preview matches the image thumbnail. Set your Selection Preview to "Grayscale" and the preview thumbnail to "Image" so you can see what you're doing. As with most things in Photoshop, there are multiple ways to get there.Įyedropper a solid part of the red cloud to make it the foreground color.Ĭhoose Select > Color Range. The eraser removes areas from the layer replacing them with the background color or - if the alpha channel is on - with transparency (see here).įinally, when you remove the alpha channel, GIMP replaces the transparency with the background color (in your example the background color was black).Ĭoming to your question, if you want transparent images with full colors, you can simply use brushes with a 100% of opacity (and, if the case, a hardness of 100).This will require a little experimentation. If you add a layer behind, then fill with a colour, you will see how well your edges have been blended into the background. If the layer is without alpha channel, the brush's color merge with the background color (or anyhow with the colors of the pixels). 1 The grey/white checkered background is the indicator that you are 'seeing through' to no background - ie that area is transparent. On the other hand, you can use on an image (whether with alpha channel or not) brushes with opacity (see here), which create the effect of a color with transparency while drawing. At this point, your layer is ready to add the image of your choice behind, with. the browsers) are able to use this information while representing the image. The grey/white checkered background is the indicator that you are 'seeing through' to no background - ie that area is transparent. PNG) are able to store the alpha channel information and some applications (e.g. You can find here a simple diagram which illustrates this concept. In GIMP as well in other editors the images can have a specific channel named Alpha channel, so named from a process called alpha compositing, used to create the appearance of partial or full transparency.
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