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Graphics: Use Lossy Compression for Smaller GIFs and PNGs – gif lossy png compression for smaller images pngs lzw algorithm

Lossy compression is a good way to squeeze extra bytes out of your GIFs and PNGs. Lossy compression changes pixel patterns to match other pixel patterns to allow more efficient compression. You can apply lossy compression to the entire image, or selectively using weighted optimization with alpha masks for less important areas of your images (see Figure 1). Although the term sounds catchy, it should not be confused with the lossy compression used in JPEG compression.

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