A “digital image” is a picture stored on a computer., Images can be made by putting together lots of tiny squares, known as pixels., Bitmap images are then stored as binary numbers., The binary number defines the colours., In a low-resolution image, the pixels are larger., This results in images that look blocky or pixelated., Metadata is information about an image., Vector images are made up of points, lines and shapes., Vector files are small as they are stored mathematically., Vector image quality remains the same when enlarged (lossless).,

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