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Original file (SVG file, nominally 512 × 476 pixels, file size: 4 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Original file (SVG file, nominally 610 × 554 pixels, file size: 12 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Original file (9,042 × 5,159 pixels, file size: 417 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
This image illustrates the difference between bitmap and vector images. The bitmap image is composed of a fixed set of pixels, while the vector image is composed of a fixed set of shapes. In the picture, scaling the bitmap reveals the pixels while scaling the vector image preserves the shapes.
For example, graphically simple images (i.e. images with large continuous regions like line art or animation sequences) may be losslessly compressed into a GIF or PNG format and result in a smaller file size than a lossy JPEG format. For example, a 640 × 480 pixel image with 24-bit color would occupy almost a megabyte of space:
In actual images, these extra pixels are often partly or entirely black, as only the center 704 horizontal pixels carry actual 4:3 or 16:9 image. Hence, the actual pixel aspect ratio PAR for PAL video is a little different from that given by the formula, specifically 12:11 for PAL and 10:11 for NTSC.
One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image.
Size of this PNG preview of this SVG file: 659 × 205 pixels. Other resolutions: 320 × 100 pixels | 640 × 199 pixels | 1,024 × 319 pixels | 1,280 × 398 pixels | 2,560 × 796 pixels . Original file (SVG file, nominally 659 × 205 pixels, file size: 51 KB)