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https://stackoverflow.com/questions/9147883/only-png-supports-transparency-is-that-true
PNG-24 supports only GIF-like transparency (one color is specified to be the transparent color and it is fully transparent). PNG-32 supports different levels of transparency via the alpha channel, in which each pixel can have an opacity between 0 and 255. There may be some applications that erroneously refer to PNG32 files as "PNG-24".
https://community.adobe.com/t5/photoshop/png-transparency-to-alpha-channel/td-p/8752004
Dec 24, 2016 · I also need to sometimes use an alpha channel with .png instead of what Photoshop translates as layer transparency. In the specific case of a .png file, an existing alpha channel is translated by Photoshop to layer transparency. It doesn't do this with Tiff …
https://en.wikipedia.org/wiki/Portable_Network_Graphics
PNG supports non-premultiplied alpha only whereas TIFF also supports "associated" (premultiplied) alpha. Software support. The official reference implementation of the PNG format is the programming library libpng. It is published as free software under the terms of a permissive free software license. Therefore, it is usually found as an ...Developed by: PNG Development Group (donated to W3C)
https://www.ntwind.com/software/winsnap/alpha-channel.html
A value of 100% in the alpha channel gives a fully solid pixel and 0% provides full transparency. By selecting values of between 0% and 100%, pixels can be shown through the background (similar to glass), and therefore retain their anti-aliasing no matter the background. The alpha channel is supported by PNG and TIFF image formats. Using ...
https://www.lunapic.com/editor/?action=alpha-transparency
Use Lunapic to make your image Semi-Transparent (known as Alpha Compositing). Use form above to pick an image file or URL. Then, use the slider bar to adjust the percentage of transparency. In the future, access this tool from the menu Adjust > Alpha Transparency
https://community.adobe.com/t5/premiere-pro/premiere-not-interpreting-alpha-transparency-but-after-effects-is/td-p/9710877
I have some png quicktime quicktime PNG codec with alpha channel, it does not show transparency on premiere. On aftereffects, it works fine. What can be the issue here? Went to modify>interpret footage and alpha channel is selected in premiere.
http://www.howtocreate.co.uk/alpha.html
PNG also supports binary transparency, as well as full Alpha, meaning that each pixel of the image can also have one of 256 different levels of transparency (or 65 thousand levels if you really want to). PNG format produces files with approximately the same file size as the equivalent GIF image, assuming they have the same number of colours.
https://docs.gimp.org/en/gimp-using-web-transparency.html
2.3. Saving Images with Transparency. ... simple binary transparency and alpha transparency. ... Alpha transparency is supported in the PNG format; the transparency information is stored in a separate channel, the Alpha channel. Note; The GIF format is rarely used because PNG supports all the features of GIF with additional features (e.g ...
https://24ways.org/2007/supersleight-transparent-png-in-ie6/
Newer breeds of browser such as Firefox and Safari have offered support for PNG images with full alpha channel transparency for a few years. With the use of hacks, support has been available in Internet Explorer 5.5 and 6, but the hacks are non-ideal and have been tricky to use.
https://en.wikipedia.org/wiki/Transparency_(graphic)
PNG and TIFF also allows partial transparency, which solves the edge limitation problem. However, support is even more patchy. Internet Explorer prior to version 7 does not support partial transparency in a PNG graphic. Very few applications correctly process TIFF files with alpha channels.
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