I downloaded and installed it... but I have no idea how to use it.
How does this work? How do I get it to read an image? I opened up Terminal and I got this:
EXIFTOOL(1) User Contributed Perl Documentation EXIFTOOL(1)
NAME
exiftool - Read and write meta information in files
SYNOPSIS
exiftool [OPTIONS] [-TAG...] [--TAG...] FILE...
exiftool [OPTIONS] -TAG[+-<]=[VALUE]... FILE...
exiftool [OPTIONS] -tagsFromFile SRCFILE [-SRCTAG[>DSTTAG]...] FILE...
exiftool [ -ver | -list[w|f|wf|g[NUM]|d] ]
For specific examples, see the EXAMPLES sections below.
DESCRIPTION
A command-line interface to Image::ExifTool, used for reading and writ-
ing meta information in image, audio and video files. FILE is a source
file name, directory name, or "-" for the standard input. Information
is read from the source file and output in readable form to the console
(or written to an output text file with the -w option).
To write or copy information, new values are specified with the
-TAG=[VALUE] syntax or the -tagsFromFile option. This causes FILE to
be rewritten, and by default the original file is preserved with
"_original" appended to the file name. (Be sure to verify that the new
file is OK before erasing the original.) Once in write mode, exiftool
: