I need to convert a bunch of images (about 1000) to black and white I used the following code:

convert *.bmp -monochrome ./*.bmp

but it produces new images. for example, I have file1.bmp, file2.bmp and etc. and it converts them to file1-1.bmp file2-2.bmp and so on. I need the exact same name for images so I prefer to overwrite the existing one. any suggestion. Thanks!

CodePudding user response：

Use:

mogrify -monochrome *.bmp

Note that this old v6 syntax to match your convert.

Modern v7 syntax would be:

magick mogrify -monochrome *.bmp