In my example image of my Cephalotus follicularis, also known as the Australian Pitcher Plant, it would take a very long time to get a perfect outline around the entire plant using the Eraser tool to do it all by hand. You don’t have to use the Eraser tool in order to get a transparent background in GIMP. Other Methods for Erasing to Transparency There are also some filters that can cause GIMP to add an alpha channel, such as the Color to Alpha filter, which automatically turns all the pixels of a specific color into transparent pixels.Īdditionally, some image types like the PNG format, which is most commonly used for transparent images, may automatically include an alpha channel although JPEGs and other common file types may need to have one explicitly added. Whenever you create a new layer that has been filled with transparency, GIMP will automatically add an alpha channel to your image in order to handle the new transparent layer. There are also a couple of other situations where GIMP might automatically add an alpha channel for you. If you find that you’re working on an image that already has an alpha channel, you won’t need to bother with adding another one, and you can just skip right to Step 2 and start erasing to transparency right away. Click and drag to start erasing, and you’ll automatically be erasing to transparency! Step 2: Switch to the Eraser tool using the toolbox or by pressing the keyboard shortcut Shift + E. Whether you need to remove a stranger or insert in your uncle who missed the family reunion, we’ve got you covered. This tutorial will walk you through every step of the process.
The Channels panel now has four channels instead of the standard RGB Removing and inserting people into photographs is one of the most fundamental photo manipulation skills that you need to know.
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