Nadia Petrov Customer Education Lead at 4OVER4.COM
Nadia is our customer education voice, built from the knowledge of our production team, with over 20 years in printing.
Question
What are raster images?
Answer
Raster images are made up of a fixed grid of tiny colored squares called pixels. Anything created in a pixel editor like Adobe Photoshop, or captured with a camera or scanner, is a raster image.
- Built from pixels: each pixel holds one color, and the whole grid combines to form the picture.
- Resolution matters: for sharp printing, keep raster art at 300 DPI at the final print size.
- Enlarging softens them: scaling a raster image up stretches the pixels and can look blurry or blocky.
- Common formats: JPG, TIFF, PSD, and PNG.
- Best for: photographs, detailed textures, and any artwork with smooth color gradients.
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