Copied files from macOS to Windows have hidden files which are part macOS filesystem which are called resource forks. These files are not useful for Windows and if the plan is to use only Windows, then we can delete these files safely. The files starts with ._. There is another file .DS_Store also. I wrote a Java program to recursively walk the given directory and list, delete these two type of files. I had 1856 resource fork files starting with ._ under my blog directory which I deleted using this program. There is an executable jar file under bin folder. The source code is available from GitHub. There is --list option to list the files before going for a delete directly.