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is format jpg safe?

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is format jpg safe?
kenny1999 Offline
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#1
02-10-2021, 09:23 PM
what I mean is 
I know that if a picture (for example which contains personal information that I have 
hidden) is saved as xcf it is possible that it can be reversed and hidden information could '
be revealed. 

I know the answer is yes but I'm not tech geek so just wish to make sure

If I hide something and save it as jpg or jpeg or bmp is it final? and just totally 
Impossible to reverse the hidden part right??
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eepjr24 Offline
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#2
02-10-2021, 09:45 PM
Are you talking about file metadata? Or a hidden (not displayed) layer? Or something else?
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kenny1999 Offline
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#3
02-10-2021, 09:50 PM
(02-10-2021, 09:45 PM)eepjr24 Wrote: Are you talking about file metadata? Or a hidden (not displayed) layer? Or something else?

Metadata? Did you mean those shown when I click on properties of a file? No if you are talking about this.

I am talking about a picture , and then I draw a solid square box (for example) on top
of part of a picture because I want to hide this part, and save it as jpg/jpeg/bmp, is it then
 impossible to remove the square box and show the hidden part again??
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rich2005 Offline
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#4
02-11-2021, 08:54 AM
(02-10-2021, 09:50 PM)kenny1999 Wrote:
(02-10-2021, 09:45 PM)eepjr24 Wrote: Are you talking about file metadata? Or a hidden (not displayed) layer? Or something else?

I am talking about a picture , and then I draw a solid square box (for example) on top
of part of a picture because I want to hide this part, and save it as jpg/jpeg/bmp, is it then
 impossible to remove the square box and show the hidden part again??

For a jpeg image ? Recover redacted parts? No. A jpeg is just a collection of pixels, nothing under them.
However there is possibly lots of other information. Could an embedded thumbnail keep the pre-redacted image ? Unlikely but a very tiny possibility.

More than a few ways of removing all the excess information. Guessing a GUI is favourable for you.
Get XNviewMP https://newsgroup.xnview.com/viewtopic.php?f=82&t=41429 This can strip that metadata from one or several images easily.

example: https://i.imgur.com/UPPAiMa.jpg Before - Lots of data, camera information, dates and times, sometimes geographical location. After - Only the color profile (RGB type).
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denzjos Offline
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#5
02-11-2021, 11:48 AM
To clean information from jpg files I use jpg cleaner since it was available : https://jpg-cleaner.en.softonic.com
It still work on windows 10 64 bit
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