Image grayscale conversion tool, which can convert color photos into black and white grayscale images, suitable for creating retro effects and reducing file size
Description translated from the developer's original Chinese by machine translation. 中文原页 ↗
图片灰度转换工具，可将彩色照片转为黑白灰度图像,适合制作复古效果和减小文件大小
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