Opacity is a property in digital images that determines the transparency of the image. It can be used to create a variety of effects, such as: making the image more or less clear, merging two images together, creating a shadow or light effect, hiding part of the image. Opacity is measured on a scale from 0 to 100, where 0 is the most transparent and 100 is the most solid. Here are some ways to use image opacity: To make the image clearer: you can increase the opacity of the image. To make the image more transparent: you can reduce the opacity of the image. To merge two images together: you can place two images on top of each other and adjust the opacity of one or both of them. To create a shadow or light effect: you can use the image opacity to create a shadow or light effect. To hide part of the image: you can use the image opacity to hide part of the image. Tips: Use image opacity moderately. Try using image opacity to create creative effects. Make sure the image opacity is suitable for your needs. Examples of using image opacity: Creating a silhouette image: image opacity can be used to create a silhouette image of a person or object. Hiding someones identity: image opacity can be used to hide someones identity in an image. Merging two images together: image opacity can be used to merge two images together to create a double exposure effect. Creating a foggy effect: image opacity can be used to create a foggy effect on the background of an image. Many file formats support image opacity, including: PNG: a lossless data file format that supports transparency. GIF: a lossless data file format that supports transparency. TIFF: a lossless data file format that supports transparency. PSD: a file format specific to Adobe Photoshop that supports transparency. TGA: a lossless data file format that supports transparency. BMP: a data file format that supports transparency (to a limited extent).