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GZIP Compression and Image Compression
05-06-2010, 04:16 AM
Post: #2
RE: GZIP Compression and Image Compression
No, the image compression check (particularly for jpegs) is re-compressing the images at a standard quality level (and stripping out the meta data). You don't want to gzip them, it will only make them bigger.

The target quality we used is based on Photoshop (so if you're using something else it will be on a different scale). The photoshop standard we use is "save for web quality level 50" which means to use a jpeg quality of 50 in the "save for web" mode.

That's just the standard we measure against though. What you really need to do is see how low you can go without sacrificing the image quality. The tools (like photoshop) that let you preview the output image as you play with the quality setting really help make it easy to do.
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RE: GZIP Compression and Image Compression - pmeenan - 05-06-2010 04:16 AM

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