lossless
adjective computing, electronics specialized uk/ˈlɒs.ləs/ us/ˈlɑːs.ləs/
没有丢失数据的;没有损耗电子能量的
not involving the loss of data or electrical energy
Lossless compression algorithms reduce file size with no loss in image quality. 无损压缩可以减少文件大小却不影响图像质量。
Compare: lossy