套件：optipng（0.7.8+ds-1 以及其他的） [debports]
advanced PNG (Portable Network Graphics) optimizer
OptiPNG is a PNG optimizer that recompresses the image files to a smaller size. It losslessly reduces the bit depth, the color type and the color palette of the image, runs a suite of compression methods and strategies, and selects the compression parameters that yield the smallest output file. It also recognizes several external file formats like BMP, GIF, TIFF and PNM (PBM, PGM, PPM).
其他與 optipng 有關的套件
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- dep: libc6 (>= 2.34)
- GNU C 函式庫：共用函式庫
同時作為一個虛擬套件由這些套件填實： libc6-udeb
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- dep: libpng16-16t64 (>= 1.6.2)
- PNG library - runtime (version 1.6)
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- dep: zlib1g (>= 1:1.1.4)
- 壓縮函式庫 - 跑程式時用(runtime)