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

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

   Making an image that was incorrectly saved as JPEG fit for saving as PNG; Suppose you have a map for an island that was inadvertently saved as JPEG. Looks OK, if a bit fuzzy. 1. In your bitmap graphics editor, set your fuzzy selection ("magic wand") tool so that it only will select pixels of exactly the same color. (Here: Threshold = 0) 2.

3. Unsharp masking - Wikipedia

   en.wikipedia.org/wiki/Unsharp_masking

   Unsharp masking applied to lower part of image. Unsharp masking (USM) is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the technique uses a blurred, or "unsharp", negative image to create a mask of the original image. The ...

4. Comparison gallery of image scaling algorithms - Wikipedia

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

   The resulting image is larger than the original, and preserves all the original detail, but has (possibly undesirable) jaggedness. The diagonal lines of the "W", for example, now show the "stairway" shape characteristic of nearest-neighbor interpolation. Other scaling methods below are better at preserving smooth contours in the image.

5. Fix problems reading or receiving AOL Mail

   help.aol.com/articles/fix-problems-reading-or...

   The image sent may have been sent as an attachment rather than an embedded image. If the image is sent as an attachment, you'll need to download it before you can view the image. Reset your web settings. Sometimes installing multiple browsers can result in your web settings getting changed.

6. Wikipedia:Image thumbnails blurry - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Image_thumbnails...

   In fact, it is the same data image, and when viewed full-size, it is already downloaded to the computer (from the wiki-servers) as the full GIF image. Advantage: Even though a GIF thumbnail image typically appears blurry, it can be instantly displayed as full-size, because it IS the full-size image in a compressed display.

7. Fix issues with AOL Mail image challenges

   help.aol.com/articles/what-should-i-do-if-i-get...

   If you've just passed an image challenge, but are immediately prompted by another, there may be an issue with your browser. Before you attempt another image challenge, clear the cache on your web browser. If you're still prompted to retake the image challenge multiple times a day, you might have a more serious issue.