用于网络和设备的 Photoshop 导出结果像素化
当我在 Photoshop CS5 中导出到网络和设备时，它会出现像素化。我应该更改什么设置？
我有一张导出设置的图片
When I export for web and devices in photoshop CS5 it comes out pixelated. What setting should I change?
I have a picture of my export settings
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我认为您将像素化与海报化混淆了。
像素化仅在您尝试显示大于其原始分辨率的图像时才会发生，即：将其放大到比原来大得多。
当您将调色板中的颜色数量减少到固定数量的颜色而无法容纳图像中的所有颜色时，就会发生色调分离。
解决方案
在您的情况下，您将颜色空间从 24 位全色削减为索引颜色 8 位，您无法在调色板中获得足够的
256颜色颜色代表 24 位原色中的所有颜色。我不知道为什么您需要 256 索引调色板，例如 1997 年的要求，但如果您确实需要将全彩图像削减到 256 色您需要启用
抖动这样它就可以尝试通过混合调色板颜色并欺骗眼睛看到比实际颜色更多的颜色来创建中间颜色。Photoshop 中有不同的抖动算法，请尝试一下，看看哪一种可以为您带来最佳效果。
如果您确实不需要仅 256 色，则将其设置为 24 位全色。
实际上，您将其设置为
选择性，并且实际上只是生成一个53调色板，所有这些图像都必须共享其中的颜色，这永远不会看起来不错。I think you are confusing
pixelationwithposterization.Pixelation only occurs when you try and display an image larger than its native resoluion, ie: enlarging it much larger than it was originally.
Posterization occurs when you reduce the number of colors to a pallet with a fixed number of colors that can't accomadate all the colors in your image.
Solution
In your case, you are cutting the color space down from 24 bit full color to index color 8 bit, you can't get enough colors in
256colors in your palette to represent all the colors in the 24 bit original.I don't know why you need a 256 index color palette, that such as 1997 requirement, but if you really need to cut your full color images down to 256 colors you need to enable
ditheringso that it can try and create intermediate colors by mixing the palette colors and tricking the eye to see more colors than are actually there.There are different dithering algorthims in Photoshop, try them and see which one gives you the best results.
If you don't really have a requirement for only 256 colors, then set it to 24 bit full color.
In reality you have it set to
selectiveand are only actually generating a53color palette, that all those images have to share colors from, that will never look good.我也有同样的问题。经过大量实验后，发现解决方案非常简单。保存到网络时请勿使用调整大小选项。使用 psd 文档的实际大小或将图层移动到较小的文档。请注意，我确实使用 png24 以获得最佳质量。
I had the same problem. After excessive experimenting, the solution turned out to be real simple. Do not make use of the option resize while you save to web. Use the actual size of the document in psd or move the layers to a smaller document. Note that i do use png24 for best quality.