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Is there a way to find out the MIME-TYPE (or is it called "Content-Type"...) of a file in windows batch/PowerShell?

Paul
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eldblz
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    http://superuser.com/questions/274734/is-there-a-tool-that-can-determine-the-file-type-from-containing-data – CodeCaster Sep 08 '15 at 14:21

2 Answers2

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While not directly in the Windows command prompt, a more modern approach is to use Git for Windows. Once installed, run git-bash and the command file path\to\file. An example output might be:

TestFile.ico: MS Windows icon resource - 1 icon, 128x128, 32 bits/pixel

Alternatively, use the command file -i path\to\file which might give:

TestFile.ico: image/vnd.microsoft.icon; charset=binary
AlainD
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  • Thank you! At least I can get the mime types and construct an `mv` batch to fix the file extensions. Perhaps someone with more time can automate the process :) – ADTC Mar 23 '21 at 17:12
  • Great answer. Didn't have to download anything as I had git installed. – Navjot Singh May 12 '21 at 11:06
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Use File from source or you can get win32 binaries from here

Example from empty file: 

COPY NUL >test.ext && "C:\Program Files (x86)\GnuWin32\bin\file" −-mime-type test.ext

Which will return this:

test.ext; text/plain

Update:

Also -b or --brief do not prepend filenames to output lines

file -b −-mime-type test.ext return only the mime-type: text/plain

Type file --help for more options

Note: The sources are much more recent than the executable file kindly made available to us by GnuWin32.

Paul
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