Is it necessary for all my artwork to be in vector format?

When it comes to computer graphics, discussions often involve raster images, also known as bitmaps, which consist of a grid of colored squares. Alternatively, you might encounter vector graphics, comprising points, lines, and curves that can be manipulated to form various shapes. Unlike pixel-based images, vector graphics are based on mathematical information, allowing for scalability from the size of a business card to a billboard without compromising image quality.

Vector graphics find common applications in logos and digital illustrations, with a prevalent but often unnoticed use in daily life — most text is vector-based. This characteristic enables users to alter font and size without compromising quality.

To distinguish between raster and vector graphics, a simple zoom test suffices. Smoothness when zooming suggests vector graphics, while pixelization indicates a raster image.

It is important to note that a graphic retains its vector quality only in a digital environment; once printed, it becomes rasterized. The advantage of providing a vector image lies in the printer's ability to rasterize it at the press's operating resolution. Despite common advice for images to be 300 pixels per inch for good print results, printers often operate at 1200 DPI, making the difference in print quality between a 300-PPI image and a higher resolution negligible for photographs.

While vector images are optimal for text, it's not advisable to vectorize photographs, as illustrated in the sample image. Each image type has its applications, and there are instances where a raster image might be preferred, such as in complex illustrations or detailed CAD renderings.

Remember, the decision between vector and raster images depends on the specific application, with neither being universally superior.