What image format is primarily used for logos and illustrations?

The correct choice is vector, primarily because vector graphics are composed of paths defined by mathematical equations rather than pixels. This characteristic allows them to be scaled to any size without loss of quality, making them ideal for logos and illustrations that may need to be resized for different applications such as business cards, billboards, or websites.

Vector graphics also maintain clarity and sharpness at various sizes, ensuring that the logos and illustrations appear crisp and professional, regardless of scale. This flexibility is crucial for branding and marketing materials, where the visual representation must remain consistent.

In contrast, other formats, such as JPEG and PNG, are raster-based, meaning they consist of a fixed grid of pixels. When these raster images are enlarged, they can become pixelated and lose detail, which is less acceptable for logos and other illustrations that need to retain a clean appearance. TIFF files, while high-quality and suitable for print, do not provide the same scalability as vector formats, making them less suitable for logos used in varying dimensions.