Houdah Software

Versatile. Dependable

HoudahGeo is a photo geocoding & geotagging solution made for Mac OS X.
It enables you to assign pictures to the locations where they were taken.

We have real estate agents publishing photos pinned to the appropriate locations.
Environmental workers and government officials use HoudahGeo to document environmental damages, structure condition, …

Industry standards. Industrial strength

HoudahGeo writes industry standard EXIF, XMP and IPTC metadata tags.
The visible image itself is not altered in the process. Images are not re-compressed!

In addition to JPEG, HoudahGeo supports a large number RAW image file formats as well as XMP sidecars.
Please use the demo version to verify compatibility with your camera's image files.

Easy to use 3-step interface

Step 1: Load

• Load images from your photo libraries
• Load images from the file system
• Import GPS track logs and waypoints from many brands of GPS devices
• Load GPX, NMEA, LOG, … tack log files created by third party products
• Configure camera time zone and clock error for accurate geocoding

Step 2: Process

• Geocoding from GPS track logs is automatic
• Use the build-in map to double-check and adjust locations
• Manually geocode images by pointing out locations on the map or in Google Earth
• Geocode from reference photos taken using a GPS-enabled camera or phone
• Reverse geocode: determine location names and ground altitude from GPS coordinates
• Enter metadata: coordinates, location names, title, description, keywords, …

Step 3: Output

• Write EXIF, XMP and IPC metadata tags to image versions, image masters or XMP sidecars
• Notify iPhoto / Aperture: transfer geodata to the Places databases
• Google Earth KMZ/KML export: see your images in the context of the locations where they were taken
• Publish to Evernote: safeguard your images. Sync them to your Evernote enabled devices
• Upload to EveryTrail: publish a log of your travels
• Flickr upload: share your geotagged photos

iPhoto, Aperture & Lightroom integration

HoudahGeo works with your preferred photo library. Browse and select images right from within HoudahGeo.

When working with iPhoto or Aperture, HoudahGeo uses current edited versions for publishing operations.
When writing EXIF / XMP / IPTC tags, HoudahGeo offers the option to write to either the working versions or the original (master) image files.

HoudahGeo may also notify iPhoto '11 and Aperture 3 when it makes new geotags available.
See the updated positions in iPhoto or Aperture Place.

Automatic geocoding

Geocode images from a GPS track log. HoudahGeo matches the timestamps on your photos to the data points in the track log.
HoudahGeo connects directly to many brands and models of GPS track loggers.
HoudahGeo can also work from GPX or NMEA track logs files created by the device vendor's software.

In addition to recording continuous track logs, many devices can set waypoints at the press of a button.
HoudahGeo can automatically geocode photos the nearest waypoint.

Geocoding from Reference Photos

Many modern phones, like the iPhone, have built-in GPS receivers as well as cameras. Theses can take geocoded photos.
HoudahGeo is able to use those geocoded photos as reference points when geocoding photos from your regular point and shoot or DSLR camera.
When HoudahGeo is given both a geocoded photos and photos that lack geotags, I can assume that photos taken during the same time frame were in fact taken at the same location.

While taking photos, you should take one reference picture at each location where you stop.

Manual geocoding

When no GPS data is available, photos may be geocoded manually by pointing out locations in Google Earth or using the integrated map interface.
You may also key in GPS coordinates that you gathered from sites like Wikipedia. E.g. coordinates of many an attraction or building are readily available.