What is a quick way to adjust the transparency of a layer?

Using the Opacity property is a quick and efficient way to adjust the transparency of a layer in Adobe After Effects. Each layer has an Opacity setting that can be easily modified within the Transform properties. By adjusting this value, you can make the layer more or less transparent in a straightforward manner. A lower percentage results in increased transparency, while a value of 100% means the layer is fully opaque.

While changing the blending mode does affect how a layer interacts with the layers beneath it, it does not directly control the transparency of the layer itself. Similarly, applying a fade effect typically involves keyframing opacity changes over time, which can be more time-consuming compared to simply adjusting the Opacity property directly. Changing the layer color does not impact its transparency either; instead, it only alters the visual appearance of the layer without influencing its opacity settings.