Optimizing Web Graphics: Compression | 2 | WebReference

Optimizing Web Graphics: Compression | 2

Compression

Optimizing Web Graphics: Expanded JPEG comparison

The latest version of ProJPEG offers the ability to pick a fixed size for a JPEG, and have the program pick the quality/compression settings to match that size. For the sake of comparison, the PhotoShop/ImageReady 2 settings to create an image of the same approximate file size are shown.

Expanded JPEG Compression Comparison (Fixed File Size Comparison
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PhotoShop/IR2 Quality 80 optimized JPEG ProJPEG4 fixed 23k size ProJPEG4 fixed 23K size, Smoothing 0 JPEG
Image Ready2, Quality 80%, Optimized JPEG = 23KProJPEG4 fixed 23k size JPEGProJPEG4 fixed 23K size, Smoothing JPEG
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ImageReady2 61% quality, Optimized JPEG PJ4 fixed 14K size, Better sampling JPEG
ImageReady2 61% quality, Optimized JPEG = 14KN/AProJPEG4 fixed 14K, Smoothing 0, Better sampling JPEG
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ImageReady2, Quality 26%, Optimized JPEG ProJPEG4 Fixed 7K, Smoothing 0, Sampling off JPEG ProJPEG4 Fixed 7K size, Smoothing 10, Better Sampling JPEG
ImageReady2, Quality 26%, Optimized JPEG = 7KProJPEG4 Fixed 7K, Smoothing 0, Sampling off JPEGProJPEG4 Fixed 7K size, Smoothing 10, Better Sampling JPEG
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ImageReady2, Quality 39%, Blur 20, Optimized JPEG ProJPEG4, Fixed 7K, Smoothing 10, Sampling off JPEG ProJPEG4, Fixed 7k, Smoothing 0, Better Sampling JPEG
ImageReady2, Quality 39%, Blur 20, Optimized JPEG = 7KProJPEG4, Fixed 7K, Smoothing 10, Sampling off JPEGProJPEG4, Fixed 7k, Smoothing 0, Better Sampling JPEG

Comments are welcome


Created: Feb. 10, 2000
Revised: Feb. 10, 2000

URL: http://webreference.com/dev/graphics/compress2.html