Definition of "Raster Graphics" by Graphic Design Newcastle:
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Raster Graphics refer to digital images composed of a grid of individual pixels (picture elements), where each pixel holds a specific color value. These graphics are resolution-dependent, meaning their quality is tied to their pixel dimensions—scaling them up can result in a loss of clarity or pixelation.
Common raster file formats include JPEG, PNG, GIF, BMP, and TIFF. Raster graphics are ideal for complex images with rich detail and color gradients, such as photographs and digital paintings.
Raster graphics are typically created and edited using software like Adobe Photoshop, GIMP, or Corel Painter.