Which image format can be enlarged or resized without losing image quality

A rule of thumb to keep in mind is that raster files (like GIF, JPEG, and even some PNGs) will lose some quality when resized or re-formatted but vector images like SVGS, AI, and XPS will not. They can be sized up or down without any loss of quality.

Raster images‘ dimensions are measured in pixels. Because raster images cannot be enlarged without losing quality, printers require that you provide them with files at the correct size: 1.