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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...

    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.

  3. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF)—unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF". [ 6 ] PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and ...

  4. Layers (digital image editing) - Wikipedia

    en.wikipedia.org/wiki/Layers_(digital_image_editing)

    The top layer (the bird) is partially transparent, so the background clearly can be seen through its wing. In this picture the top layer has a drop shadow , a red color overlay of 40%, a gradient overlay from red to yellow of 20% opacity, and a slight bevel effect.

  5. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Wikipedia:Uploading images

    en.wikipedia.org/wiki/Wikipedia:Uploading_images

    English Wikipedia allows non-free images to be uploaded under fair use doctrine if there is no possibility that a free image exists or will be created (think: portraits of dead people, long-past events, etc). If so, please follow the non-free content guidelines, and upload it locally to English Wikipedia only (not Wikimedia Commons).

  7. QOI (image format) - Wikipedia

    en.wikipedia.org/wiki/QOI_(image_format)

    Each chunk starts with a 2- or 8-bit tag, followed by a number of data bits. The bit length of chunks is divisible by 8 - i.e. all chunks are byte aligned. All values encoded in these data bits have the most significant bit on the left. The 8-bit tags have precedence over the 2-bit tags. A decoder must check for the presence of an 8-bit tag first.

  8. Grayscale - Wikipedia

    en.wikipedia.org/wiki/Grayscale

    The TIFF and PNG (among other) image file formats support 16-bit grayscale natively, although browsers and many imaging programs tend to ignore the low order 8 bits of each pixel. Internally for computation and working storage, image processing software typically uses integer or floating-point numbers of size 16 or 32 bits.

  9. Comparison of color models in computer graphics - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_color_models...

    A color wheel is a tool that provides a visual representation of the relationships between all possible hues. The primary colors are arranged around a circle at equal (120 degree) intervals.

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