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2

You can use Apache Tika and create your own program to extract metadata, it is pretty easy to do and here is a tutorial on how to do that. As the other answer says there is no surefire way to extract metadata from every type of file but Tika covers an alright amount.


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The Unix/Linux file command will extract a lot of metadata inside files, and if you are using Windows, you can install cygwin to gain access to that command. Some example output: C:\Users\stewmark\ScreenShots>file *.png ChangePW.png: PNG image data, 1167 x 1046, 8-bit/color RGB, non-interlaced ChangePW_link.png: PNG image ...


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Where metadata is stored will be up to the OS and the file that created it (as you say about Notepad and Word docs). Some file types even create a separate file just to hold the metadata. Because of #1, there is no free "give me all the metadata" tool. There are tools that can find the metadata of a wide range of well-known file types, though. Because of ...



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