my jpegs suck ass
Out of context: Reply #15
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- fyoucher10
Basically what lukus_W says...
- The more detail and colors the image has, like hair, faces, textures, patterns and gradients: use JPEG compression. The more detail, the higher the file size. Also, if the image has some "blurriness" or softened edges to it (not meaning actual blur, but things like smoke), then always use JPEG as it will compress things like that nicely. If you SAVE FOR WEB as JPEG in Photoshop, there's also an option to add blurriness to the image. Sometimes you can blur the image, while keeping the look the same, but dropping file size considerably.
- GIF's, on the other hand, are great for simple vectors. GIF's are color-based. So if you have illustrations with hard edges, that use under 256 colors, and don't use gradients...use GIF compression. Things that DON'T have softened edges or blurriness to it. If you want to lower file size in a GIF, mess around with adding lossiness to the image. You can tell you've added too much when you start seeing a lot of noise. If you DO have gradients or things with softened edges, you can play around with dithering. (Sometimes you have images that are like photo's but are almost like vectors..in between GIF and JPEG use)
- 8-bit and 24-bit PNG's are similar but I believe you'll have some probs on some older browsers.