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+--- Thread: is format jpg safe? (/Thread-is-format-jpg-safe)
is format jpg safe? - kenny1999 - 02-10-2021
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??
RE: is format jpg safe? - eepjr24 - 02-10-2021
Are you talking about file metadata? Or a hidden (not displayed) layer? Or something else?
RE: is format jpg safe? - kenny1999 - 02-10-2021
(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??
RE: is format jpg safe? - rich2005 - 02-11-2021
(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).
RE: is format jpg safe? - denzjos - 02-11-2021
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