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2. Comparison gallery of image scaling algorithms - Wikipedia

   en.wikipedia.org/wiki/Comparison_gallery_of...

   An image size can be changed in several ways. Consider resizing a 160x160 pixel photo to the following 40x40 pixel thumbnail and then scaling the thumbnail to a 160x160 pixel image. Also consider doubling the size of the following image containing text.

3. Help : How to reduce colors for saving a JPEG as PNG

   en.wikipedia.org/wiki/Help:How_to_reduce_colors...

   Sometimes, you find a drawing or similar image useful for a Wikipedia article, that was saved as a JPEG but should have been saved as a PNG.JPEG is good for images where the color changes fluidly throughout the image, like in a photograph, whereas PNG files are good for images with relatively few colors, such as a drawing of a flag, a chart, or a map; note that sometimes SVG is better.

4. File:Comparison between JPEG, JPEG 2000 and JPEG XR.png

   en.wikipedia.org/wiki/File:Comparison_between...

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5. Update your AOL profile image

   help.aol.com/articles/update-AOL-profile-image

   • Image file size: 15MB max • File format: .jpg, .jpeg, .png, .gif, or .svg • Image resolution size: 192X192 minimum

6. Image scaling - Wikipedia

   en.wikipedia.org/wiki/Image_scaling

   An image scaled with nearest-neighbor scaling (left) and 2×SaI scaling (right) In computer graphics and digital imaging, image scaling refers to the resizing of a digital image. In video technology, the magnification of digital material is known as upscaling or resolution enhancement.

7. Help:Pictures - Wikipedia

   en.wikipedia.org/wiki/Help:Pictures

   When the link is clicked the image is displayed with other text information at a reasonable size. The user can click through the resulting medium-sized image to get to the full size highest resolution image. You can also send the user directly to the image: [[Media:Wikipedesketch.png]] Media:Wikipedesketch.png. This says Media: instead of File ...

8. PNG - Wikipedia

   en.wikipedia.org/wiki/PNG

   Composite image comparing lossy compression in JPEG with lossless compression in PNG: the JPEG artifacts can be easily visible in the background of this kind of image data, where the PNG image has solid color. The JPEG (Joint Photographic Experts Group) format can produce a smaller file than PNG for photographic (and photo-like) images, since ...

9. Image resolution - Wikipedia

   en.wikipedia.org/wiki/Image_resolution

   The image would be a very low quality image (72ppi) if printed at about 28.5 inches wide, but a very good quality (300ppi) image if printed at about 7 inches wide. The number of photodiodes in a color digital camera image sensor is often a multiple of the number of pixels in the image it produces, because information from an array of color ...