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  1. C:\> choco install fileoptimizer

    Package testing. See package page for more details. FileOptimizer 13.90.2508

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    # Introduction FileOptimizer is an advanced file optimizer featuring a lossless (no quality loss) file size reduction that supports: .3GP, .A, .AAI, .AC, .ACC, .ADP, .AI, .AIR, .APK, .APNG, .APPX, .APR, .ART, .AVS, .BAR, .BMP, .BPL, .BSZ, .CBT, .CBZ, .CDR, .CDT, .CHI, .CHM, .CHQ, .CHS, .CHW, .CPL, .CSL, .CSS, .DB, .DCX, .DEB, .DES, .DIB, .DLL, .DOC... More information

  2. C:\> choco install pngoo

    Package testing. See package page for more details. PNGoo 0.1.1

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    PNGoo is a GUI for [pngquant](https://chocolatey.org/packages/pngquant), a PNG lossy compressor, supporting palleted alpha transparency.

  3. C:\> choco install pngyu

    Package testing. See package page for more details. Pngyu 1.0.1

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    Pngyu is a simple GUI front-end for [pngquant](https://chocolatey.org/packages/pngquant), a PNG lossy compressor, supporting palleted alpha transparency. ![Screenshot of Pngyu](http://nukesaq88.github.io/Pngyu/imgs/ss01.png)