To achieve the effect of "filling with transparency" in Photopea, you typically adjust the opacity of the layer containing the fill. This allows you to make the contents of that layer, whether it's a solid color, gradient, pattern, or image, partially or completely see-through.
Here's how to make a layer or filled area transparent in Photopea:
Adjusting Layer Transparency (Opacity)
The primary way to control transparency for any content within a layer is by adjusting its Opacity. This setting is found in the Layers panel and directly controls how see-through the layer appears.
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Select the Layer: In the Layers panel (usually on the right side of the screen), click on the layer that contains the area or fill you want to make transparent.
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Locate the Opacity Setting: At the top of the Layers panel, you will see an "Opacity" setting, often displayed as a percentage next to a slider.
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Adjust the Slider: Click and drag the slider or click on the percentage number to type in a value.
- Moving the slider down: Decreases the opacity, making the layer more transparent.
- Moving it down to 0%: Makes the layer completely transparent, meaning its contents are invisible.
- Moving it up to 100%: Makes the layer completely opaque, meaning its contents are fully visible and not transparent at all.
Reference Information: As seen in the reference, you can move the Opacity slider "down to 0%" to make a layer "completely transparent" or move it "up to 100%" to make it fully opaque.
What Opacity Means
- 100% Opacity: The layer is solid; you cannot see through it to layers below.
- 50% Opacity: The layer is semi-transparent; you can see the layers below through it at half strength.
- 0% Opacity: The layer is invisible; it is completely transparent.
Adjusting the Opacity slider is the most common method for controlling the overall transparency of any content within a specific layer after you have filled it with a color, gradient, or other content.
For instance, if you fill a shape with a solid color on a new layer, and then reduce the opacity of that layer to 50%, the solid color fill will become semi-transparent.
