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http://www.macupdate.com/download/20188/duplicateimagedetector.2.1.0.34.app.zip
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Duplicate Image Detector will hunt through your files and directories, detecting images which are identical or very close to identical. No longer will your hard drive be full of the same image copied over and over. Avoid slowing down your website by making users load the same file multiple times.

Duplicate Image Detector will even detect images which are saved in different formats but have the same source. If you have a tiff file which has then been saved using different jpeg compression settings Duplicate Image Detector will find all of those images even images that have been scaled.

Once you have found the duplicate more...

What's New

Version 2.1.0.34:
  • Fixes crashes while processing Duplicate Images

Requirements

Mac OS X 10.4.11 or later

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Duplicate Image Detector User Discussion

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MacGEEK19 Member IconReview+29
MacGEEK19
+0

This app has a great concept, but there is a few things lacking. Its a hog of the system, its interface designer should be immediately fired and the icons are horendous.

Reply0 replies
Version 2.0
MemphisGeek Member IconReview+11
MemphisGeek
+0

Bad implementation of a great idea.

Would be a easy 4 star review if it were not for the constant crashes.

Not worth the money in it's current state.

Reply0 replies
Version 1.1.10
Scott_R Member IconReview+4
Scott_R
+0

Works very well, especially in v. 1.1.1, which adds many interface enhancements as well as fixing a couple of crash problems.

I don't know why anyone would have problems understanding how to use the application; it seemed quite simple to me, but some usage enhancements would be nice. Fortunately, the developer listens to suggestions--about half of the ones I've made have already been added (and I've gone a little overboard with suggestions).

Perhaps the main reason why duplicates might not be found is that, AFAIK, the application only matches duplicates of equal size. It'll find a single image multiply saved in in JPG, TIFF, and other formats, but won't match them if one is 640x480 and another is 1024x768. So far, that is the single largest drawback to an otherwise very good program (and one that is getting better).

I have a LARGE collection of photos that is rather disorganized, including sets that I cannot now identify, but might be duplicates of ones that were previously labeled and archived. However, since we're talking 89 *thousand* photos... well, just try remembering which ones! I've been able to cull out thousands of duplicates.

To explain my rating:
For "Features" to go to 5, it needs
a) the ability to match images of different sizes, and
b) the ability to rescan a particular result, adding new images. Now, you can add a new, separate directory, but can't redo already scanned directories that had new content added (matching only the new images against the existing database).
If the little interface suggestions I've made are added--e.g., when one of a pair of duplicates is deleted, for the next pair to automatically be selected even if in different folders--"Ease of Use" goes to 5.

Right now, it's helped do things I couldn't practically do before.

Reply0 replies
Version 1.1.1
Handycam Member IconComment+22
Handycam
+0

Would be a useful app if it actually worked. I deliberately picked a folder with duplicate images and none were detected. I had to lower the threshold to like 70%, and it then found several "duplicates", but not the real duplicate images. Not sure why it failed, but it did.

Reply2 replies
Version 1.1
Luke Tupper Consulting (Developer)
+0

As you change the match percentage there is a text description underneath that tells you what is going to be matched. At 70% the match description says that it will match Similar images.

Typically you will find that if you want to find exact duplicates or only images with minor differences like JPEG compression artifacts that you will want to set the match percentage at around 95%.

If you would like to send the me the two images that you thought it should have matched I would like to have a look at them to see how I could improve my product to make those matches.

Thanks

Luke

Scott_R
+0

If I had to guess, the non-matched "duplicates" were of different sizes (x by y image size, that is, not file size). As best I know, it only matches images that have the same x and y measurements.

Handycam Member IconComment+22
Handycam
+0

Tried it. A very non-intuitive interface. I couldn't really figure out how to compare the 2 dupes to figure which to delete.

Reply0 replies
Version 1.1
Burner Dragon Member IconComment+0
Burner Dragon
+0

This is exactly what I have been looking for but it has one hiccup. Upon comparing a 11,000+ image folder(about 8 hours scan time on a G3 333), it gets the dreaded SBBOD(Spinning beachball of death) when trying to modify the duplicate images, either trashing them or revealing in the Finder.

This is probably happening because of my slow mac. Otherwise a great app.

Reply1 reply
Version 1.1
Scott_R
+0

Try v. 1.1.1.
I also had a crashing problem with 1.1; 1.1.1 seems to have fixed it.

Handycam Member IconComment+22
Handycam
+0

Donloaded it. If this works as advertised, I'll buy it.

So far, nothing on the Mac has been able to do this correctly. ViewIt and GraphicConverter have similarly named features, but don't really work unless the image is identical. I've thrown a folder full of extremely similar images (e.g. multiple portraits of the same person with slighly varying facial expression, and even a couple of duplicates with various crops and image sizes) and have gotten no hits in the other apps.

On the PC, there is Duplicate Image Finder, which works pretty good. But I'm on a mac. I'll try this and report back.

Reply0 replies
Version 1.1
Pure Digital Member IconComment+0
Pure Digital
+0

This is built into Viewit, and it costs half as much

Reply1 reply
Version 1.0.1
Luke Tupper Consulting (Developer)
+0

Thanks for the comments pure digital.

The number one difference between duplicate image detector and ViewIt is that View only identifies images which are exactly the same.

Duplicate Image Detector will analyse the images and find those images which are similar, for example an original tiff image and a duplicate jpeg which has been compressed using a lossy compression method such as jpg or png. The images aren't identical but they very close. Also images with a copyright notice or minor color correction are also considered duplicates by this application.

Thanks

Luke

There are no Ratings for this App yet.
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Ratings

Overall
(3)
Current Version (2.x)
(1)

Details

Downloads 22,103
Version Downloads 7,320
License Shareware
Date 19 Jul 2010
Platform OS X / PPC 32 / Intel 32
Price $29.95
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