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GeoTagger is a free and open source application for displaying and modifying
GPS location tags in JPEG image files. It was written because there was no
really useful program available for Linux to fulfill this task.
There is, of course, the digiKam program, which
is a very feature rich application that, amoung many, many other things, can
also edit location data. However, the first thing it wants to do is create a
"database" of your photos, which I totally despise. I want to know exactly
where my files are at any time. Besides, I wanted a tool that does exactly
one task, and is easy to use. If all you want to do is clean up the location
data in your photos, programs like digiKam are pure overkill.
Then there is the Geotag program, which
is written in Java (a whole can of worms by itself). This program opens an
external browser window every time you want to change a location, and it
displays only one location marker, not all of them. You also can't set a
location by simply clicking on the map, but rather have to drag a marker
from a default location to the desired spot.
The thing that came closest to my idea of such a tool was the GeoTag
application written by Marco S Hyman. It does
exactly one thing (editing geo tags), is easy to use and doesn't do any
database dances. Unfortunately it runs only on Mac OS. And it only displays
one location marker at a time, not all of them.
So I decided to brush up on my Qt knowledge and write an application that
runs on all major platforms, is easy to use and follows the Unix philosophy of
doing one thing right. The result was "GeoTagger".
Well, about that "one thing". It turned out that while in the process of
setting/fixing location data you look at each individual image and may
feel the need to make some small corrections, like rotating an image,
straightening the horizon or cutting off that guy who tried to photobomb your
image. These operations are also possible in GeoTagger.