![]() ![]() ![]() Drag a 24-bit PNG file into the site and, in a couple of seconds, it will return an 8-bit version, but with a full 8-bit alpha channel. TinyPNG () offers a solution to this problem. Here’s an example of a 16-bit and an 8-bit PNG side by side, exported via Photoshop’s Save for Web dialog, in which you can see that the 8-bit version is unusable:įor users of older versions of Photoshop, this was an insurmountable problem: either you’d end up with vast sizes for the cutout images on your website, or you’d have to put up with ugly cutouts. ![]() Instead of the new Export command they have to use the Save for Web dialog, which does offer the option of an 8-bit file – but this comes with a bitmap alpha channel, producing hard-edged cutouts. Users of older versions of Photoshop, however, don’t have this option. This results in a much smaller size than exporting 24-bit PNG files for web delivery, 24-bit images are unnecessarily wasteful. Photoshop CC 2015 introduced the option of saving an 8-bit PNG with true transparency using its Export feature. Exporting a PNG file from Photoshop with transparency is a key requirement if you want to place images on a colored or textured background in your website. ![]()
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