BMP 转 WebP
把不压缩的 BMP 转成体积小上许多的 WebP，图片要放到网站上时尤其合适。
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BMP
An older Windows image format with large file sizes. Rarely used today outside of old scans or software.
WebP
A modern format that keeps photos and graphics looking sharp at a smaller file size. Popular for fast-loading websites.