Detect File Type - Local

Single file

detect_file_type path/to/file

Multiple files

detect_file_type file1.pdf file2.png file3.zip

Recursive directory scan

detect_file_type --recursive ./uploads/

From stdin

cat mystery_file | detect_file_type -
Optional best-effort fast path (head only)
cat mystery_file | detect_file_type --stdin-mode head --stdin-max-bytes 1048576 -

Output formats

detect_file_type --json file.pdf    # JSON (default)
detect_file_type --human file.pdf   # Human-readable
detect_file_type --mime file.pdf    # Bare MIME type

Programmatic (Python)

python -m detect_file_type path/to/file