PNGGauntlet可以批量将PNG图片压缩和优化的工具，压缩后图片保持质量不变，只是文件大小减少。也可以将JPG、GIF、TIFF和BMP批量转换为PNG格式。PNGGauntlet集成了PNGOUT、OptiPNG和DeflOpt图片优化工具，自动帮你压缩和优化PNG的大小。

 PNGGauntlet 3.1.2 更新日志：
1.Feature Added a "Always convert files to PNG even if it would make them larger" option for those who want PNGs at any cost.
2.Fix Adding directories that contain a '.' in their name works now.
3.Fix Fix some errors when PNGGauntlet cannot create or delete temp files.