![]() ![]() The Image pull-down menu is at the top of the dialog, and will display the name of your image. The Layers tab includes Image and Mode pull-down menus, an Opacity slider and a Keep Trans. Channels will be discussed in "Channels And Duotones" starting on page 353. Open the Layers & Channels dialog ( right-click|Dialogs| Layers & Channels or right-click|Layers| Layers & Channels). It is also a great advantage to be able to move an entire layer and its contents with the Move tool, instead of first having to select the image object and then move it within the layer. The edges of the small layers appear as a yellow dotted line, and can easily be distinguished. This saves both disk space and valuable processing time. When you turn a selection (for example, a text string) into a layer, the new layer is never larger than the selection itself. You also have artistic freedom with the possibility to adjust the transparency in a layer, or to composite it with other layers using Layer Modes.Ĭontrary to other graphics programs where all layers have the same size as the image, Gimp has the ability to optimize the layer size. This means that you can easily manipulate the contents of a certain layer without affecting the rest of the image. These layers are just like a stack of transparent plastic sheets placed on top of one another, creating a composite image. Instead of placing all of these things onto a single background, you can paste or paint them in different layers. You may, for instance, have copied and pasted parts of other images into your image, or perhaps you have added a text string. Once you have started to use layers, you won't understand how you could ever do without them.Īn image created or manipulated in Gimp usually consists of several image objects. If you're new to image manipulation, the concept of layers may not seem obvious, but using layers is really as simple and straightforward as wearing layers of clothes on your body. You can also use the small mask icon at the bottom of the Layers panel, or even use the Layer menu, but they all produce the same result.Layers and the use of layers are the foundation of effective image manipulation. With your image open in GIMP, right-click on its thumbnail in the Layers panel and choose Add Layer Mask from the popup menu. Grayscale tones allow you to create sections of partial transparency, and that’s exactly what we need to fade an image gradually. ![]() If a pixel on the layer mask is white, the corresponding section in the main pixel layer is visible, and if a pixel is black on the mask, the corresponding section is transparent. That might be complex, but layer masks are one of the most powerful tools in image editing and they are actually fairly simple to use once you know how they work.Ī layer mask acts like an invisible secondary layer that sits over the top of your existing pixel layer. If you want to get a more complex fade effect, you’ll need to have control over the opacity of each pixel individually using a layer mask. If you want to set your image against a colored background, create a new layer using the keyboard shortcut Ctrl+ Shift+ N(use Command+ Shift+ Non macOS).Ĭlick and drag the thumbnail or use the arrow icons at the bottom of the Layers panel to place the new layer below your faded image, and then use the Bucket Fill tool to fill the layer with the color of your choice. Just be sure to save it as a PNG file, since the more common JPG format doesn’t support transparency. ![]() GIMP displays a checkerboard pattern to indicate transparencyĪt this point, you can save your image for use in another program if you’re happy with it. ![]()
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