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June 2006

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2006.06.06 12:59 "TIFF dump utility", by Phil Harvey

There is a tool that many of you probably aren't familiar with that can 
be very useful for visualizing the IFD structure of a TIFF file.  The 
ExifTool utility has a feature where it will dump TIFF/EXIF information 
in HTML format.  As an example, here is a sample output for a TIFF 
image:

http://owl.phy.queensu.ca/~phil/htmldump_sample.html

The one quirk is that image data shows up as "unused bytes" since this 
is meta information utility and doesn't deal with image data.  This 
output is specifically designed for debugging problems decoding EXIF 
meta information in JPEG images (including the maker notes information 
if it uses an IFD structure), but it also works well when run on TIFF 
images.

ExifTool is a set of Perl modules with an included command-line 
application, and can be downloaded from 
http://owl.phy.queensu.ca/~phil/exiftool/

- Phil Harvey