What file format is typically not suitable for images that need a transparent background?

The JPEG file format is typically not suitable for images requiring a transparent background due to its design and compression method. JPEGs use lossy compression, which means that they discard some image data to reduce file size. This compression results in an image with solid color backgrounds but does not support transparency. When you save an image in JPEG format, any transparent areas will be filled with a solid color (usually white or black), making them unsuitable for situations where transparency is essential, such as when overlaying images on various backgrounds in web design. In contrast, formats like PNG and GIF support transparency, and SVG is a vector format that can also handle transparent backgrounds effectively.