How can i recover data that has been blacked out from a jpg file

How can i recover data that has been blacked out from a jpg file
Shubham AgarwalAsked:
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Joe Winograd, Fellow&MVEDeveloperCommented:
Hi Shubham,
First, I see that you joined Experts Exchange today, so let me say — Welcome Aboard!

Unfortunately, the answer to your first question here is — you can't! When an area is blacked out (redacted) on a JPG, it is "burned" into the image. There is no way to recover what was underneath the blackout/redaction. Regards, Joe

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JohnBusiness Consultant (Owner)Commented:
Yes. I have seen this and there was (is) no way to recover.
Sara TeasdaleCommented:
If the jpeg was edited while on your computer there may be earlier versions available either in the recyclebin or in the unused space on the hard disk which may be recovered with data recovery third-party applications (
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Dr. KlahnPrincipal Software EngineerCommented:
Joe is correct.  There is no "under" layer in a JPEG encoded image file, and in any case the JPEG encoding process is lossy; whatever might have been under there before becomes fuzzier at each successive re-encoding.
Shubham AgarwalAuthor Commented:
Thanks for all your comments and knowledge you shared with me.I really found it useful.
Joe Winograd, Fellow&MVEDeveloperCommented:
The question is, "How can i recover data that has been blacked out from a jpg file". The answer is, "You can't". I marked the first post with that as the Accepted Solution and the other two posts with that as Assisted Solutions. However, it is an interesting idea that there may be an earlier, recoverable version of the file without the redaction, so I marked that as an Assisted Solution, too. Points split evenly among the participating experts.
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