Debian :: File Formats And Compatibility With Windows?

I have question(s) about file formats and line endings and would like to know how you manage this. Here is the thing: I am sharing files with a Windows user and we run into some problems of formatting: He send me files in UTF-8 and with the Windows line ending and when I open them, modify them and send them back, he got them with the unix file ending and in UTF-8 or sometimes ANSII. I know that for example in gedit (as most of the files are .htm files that I modify and send them back to him or upload directly on the net after modification) when you use "saving as" you can change the line ending and also UTF-8 or else, But the thing is that it is pretty time consuming to do a "save as" with an existing file and change the attributes when you have to deal with dozens of files. So I searched on the web and heard about tofrodos, which I installed and worked well besides that it only changes the line ending. So I was wondering: how you deal with those formats/line ending compatibility issue and how you avoid loosing time because of this but still manage to get your fellow windows users shraing files with youif you know command line tools that would enable me to modify the line ending and the formats of file(s) (also pretty basic but I didn´t find a way to check/display those attributes from the command line)tell me more about the web, as it should be the same problem (and even worst as the are a lost of unix devices acting as servers) but still windows users don´t have any problem displaying pages with are documents stored with their own line endings and formatting.