Thursday, December 22, 2011

Software to Detect if an Image has been Altered or Photoshopped

Which one is real ?
User52 : Does anyone know how to tell if an image has been Photoshopped? 

Like User52, ever wondered if a digital image has been altered? Improvements in photo manipulation softwares such as Photoshop and GIMP have made image alteration both easier to commit and harder to detect. 

But now thanks to a small software called JPEGsnoop, anyone can determine if a photo is edited using any photo editing software. Though not foolproof, this free and portable utility for Windows does a great job at detecting if an image is original or it has been altered.

First download JPEGsnoop from here and extract JPEGsnoop.exe anywhere on your computer. Start the software and check “I have read the terms” box and click OK (see screenshot below).



Program's main window will appear, now drag the image to this window and wait for the report to generate. Scroll down to the last paragraph of this report and look for the word "assessment". Here if it says “Image is processed/edited”, then the image is surly been altered by software means. Chances are, directly above that that line you may even find what program was used to edit the image!


(Click to Enlarge)


The only drawback of JPEGsnoop is that it can't predict what portions of the image has been altered and to what extent the modified image is different from the original one. That is, it can tell if an image has been altered from its original but not by how much.

Image Error Level Analyzer is a great online tool, using which, you can perform a quick scan of a JPEG image and analyze which sections might be modified. You can even play with the quality slider to spot anomalies in the error level.


FotoForensics is another online tool that's worth mentioning here. Do check their tutorial page that demonstrates different modification levels with sample photos. 

Mac Users can use the software Photo Sniff ( priced at $1.99 in the Mac App Store) to accomplish the same.

Also Check :

28 comments:

  1. This post is super... I don't usually follow any blog easily.. but this post and others.. force me to do so...

    really nice blog...

    ReplyDelete
    Replies
    1. Thanks for your kind words :)
      Feels great to get appreciated from a fellow blogger

      Delete
  2. Okay, so I'm really bummed to see that the Error Level Analyzer has been taken down because, by the looks of the example, it's pretty sweet. I don't have a Mac, so I can't get the app, but is there similar software besides the above that would work on windows? Thanks.

    ReplyDelete
    Replies
    1. Your wish is my command. I updated the post with an alternative of Error Level Analyzer. Hope it helps :)

      Delete
  3. I was given a picture that was printed out on a laser printer on plain copy paper, how to I tell if it has been photo shopped?

    ReplyDelete
  4. "Anonymous Wednesday, June 27, 2012 12:52:00 PM

    I was given a picture that was printed out on a laser printer on plain copy paper, how to I tell if it has been photo shopped?"

    Once the picture has been printed, and all you have is the print copy, all you can do is take a good magnifying glass and go around the picture looking for anomalies (such as a color pixel that looks out of place, which could mean that something was cut out or moved), pixels that don't match up with the picture or jagged edges that don't match up with edges on the rest of the picture.

    ReplyDelete
  5. Really nice post dude! Is there any tool which will combine both metadata and error analysis?

    ReplyDelete
    Replies
    1. Unfortunately I still haven't found any. Will update this post in case I come across any such software :)

      Delete
  6. can i find which software is used for editing

    ReplyDelete
    Replies
    1. JPEGSnoop can help you with that ! Check the analysis screenshot :)

      Delete
  7. Thanks for review, it was excellent and very informative.
    thank you :)

    ReplyDelete
  8. This is really a nice and informative, containing all information and also has a great impact on the new technology. Thanks for sharing it,

    ReplyDelete
  9. It is additionally a really sensible post that I actually enjoyed reading. it's not every day that I actually have the chance to examine one thing like this.
    automatic vertical autoclave suppliers
    Trincular Research microscope
    Binocular / Trinocular Microscope
    Hosipital microscope

    ReplyDelete
  10. We have read the blog and it's a nice thing in your blog. Really helpful with the information provided.Thank you for the post. For more information. Visit: shadow creation service

    ReplyDelete
  11. Thanks a lot for sharing the useful information. The content and info in article was awesome.Photo editing solutions |Image editing company|Image editing solutions

    ReplyDelete
  12. Nice post. I learn some factor more durable on distinct blogs every day. Most ordinarily it very is stimulating to be told to browse content material from different writers and exercise a particular factor there.Trincular Research microscope
    Binocular / Trinocular Microscope
    Hosipital microscope
    Laboratory microscope
    Vertical Laminar Air Flow

    ReplyDelete
  13. Great knowledge, do anyone mind merely reference back to it Background Removal Service

    ReplyDelete
  14. It is additionally a really sensible post that I actually enjoyed reading. it's not every day that I actually have the chance to examine one thing like this.Trincular Research microscope
    Binocular / Trinocular Microscope
    Hosipital microscope
    Laboratory microscope

    ReplyDelete
  15. Informative article, just what I was looking for. Thank you so much for taking the time for you personally to share such a nice info.
    _______________________
    Mac Photo Editor

    ReplyDelete
  16. You have provided an nice article, Thank you very much for this one. And i hope this will be useful for many people.. and i am waiting for your next post keep on updating these kinds of knowledgeable things...
    Best Online Print Service
    Photo Book printing
    Best professional photo printing

    ReplyDelete

Your feedback is always appreciated. We will try to reply to your queries as soon as time allows.