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  2. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    This image shows the results of overlaying each of the above transparent PNG images on a background color of #6080A0. Note the gray fringes on the letters of the middle image. This shows how the above images would look when, for example, editing them. The grey and white check pattern would be converted into transparency.

  3. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    When converting an image from the PNG format to GIF, the image quality may suffer due to posterization if the PNG image has more than 256 colors. GIF intrinsically supports animated images. PNG supports animation only via unofficial extensions (see the section on animation, above). PNG images are less widely supported by older browsers.

  4. Category : Images that should have transparent backgrounds

    en.wikipedia.org/wiki/Category:Images_that...

    The images would be better with a transparent background. Please tag images with {} if they ... Union for National Self-Determination Logo.png 225 × 225; 9 KB.

  5. Wikipedia:Blank maps - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Blank_maps

    Image:usa-state-boundaries-1000-transparent.png – USA state outlines, true positions, 1000 px wide, black on transparent; Image:usa-state-boundaries-4000.png – USA state outlines, true positions, 4000 px wide, black on white; Image:usa-state-boundaries-4000-transparent.png – USA state outlines, true positions, 4000 px wide, black on ...

  6. Image file format - Wikipedia

    en.wikipedia.org/wiki/Image_file_format

    The PNG file format supports 8-bit (256 colors) paletted images (with optional transparency for all palette colors) and 24-bit truecolor (16 million colors) or 48-bit truecolor with and without alpha channel – while GIF supports only 8-bit palettes with a single transparent color. Compared to JPEG, PNG excels when the image has large ...

  7. Alpha compositing - Wikipedia

    en.wikipedia.org/wiki/Alpha_compositing

    A color spectrum image with an alpha channel that falls off to zero at its base, where it is blended with the background color.. In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. [1]

  8. 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.

  9. APNG - Wikipedia

    en.wikipedia.org/wiki/APNG

    Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24 or 48-bit images and full alpha transparency not available for GIFs.