October 22, 2021

Removing Color in Affinity Photo

This is a question that I get asked frequently in regards to Affinity Photo:

How do you select a color in an image so that I can change it or make it transparent?

The key thing to do is to rasterize the image. When you do this, you get to delete anything you selected and you can create new layers based on your selection. Rasterizing flattens an image to create pixel layers. You have to do this even to some images. (I know it seems weird.)

To rasterize, simply right-click on the layer in the layers pallet and select Rasterize.

Now when you use the "Select Sample Color...", simply click the delete key. Alternatively, you can Copy/Paste the selection. When you do that, a new layer gets created with your selection. Now you can apply various filters to change the color.

If hitting the delete key doesn't erase the selection, it means that you didn't rasterize the layer or you're not editing on the right layer.

What's the best way to select all like colors in an image?

I would recommend using the "Select Sample Color..." in the select menu and adjusting the tolerance that best fits your needs. Remember, you can always add/remove pixels using the selection tool brush.

The "Select Sample Color is a powerful tool and useful when you want to get all those colors in-between spaces.

Once the color is selected, move it to its own layer and have fun making the color adjustments.

Affinity Photo is a pretty powerful photo tool, as there's more than one way to do things.

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