What does making an image transparent allow?

Making an image transparent allows other images or elements behind it to be visible, which is key in design work where layering images can create depth and visual interest. When an image is set to be transparent, the opacity is reduced, meaning that it doesn't completely obscure whatever lies beneath it. This technique is often used in graphic design for logos, overlays, and complex layouts to integrate various design components smoothly.

In contrast, decreasing the file size is generally associated with image compression techniques, which do not directly relate to transparency. Adding a watermark involves overlaying a logo or text on top of an image, but requires some level of opacity rather than transparency. Increasing the brightness of an image refers to altering the image’s tonal qualities, but it does not invoke any transparency adjustments.