attached pdf file create date?

How can I find create, modified date of a pdf file attached to a gmail email.

When I download it, it sets both create and download date to download date and time .

Question: Is there any way to find the original create and modified dates?
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Mike EghtebasDatabase and Application DeveloperAsked:
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Joe Winograd, Fellow&MVEDeveloperCommented:
> Question: Is there any way to find the original create and modified dates?

Yes. Open the file in whatever PDF product you use, such as Adobe Acrobat or Adobe Reader. Then click the File menu and Properties. The Created and Modified dates will be in the Description tab. Important: do not do this via Properties in Windows/File Explorer. That will give you what you do not want. You must invoke Properties from inside your PDF reader/viewer to get what you want. For example, here are the Properties from my file manager on a file that I just downloaded/saved from an email:

properties via file manager
Here are the Properties from Adobe Reader on that same file:

properties via adobe reader
Regards, Joe
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
Hi Joe,

In the acrobat reader, file/ properties opens up Document Properties interface but both create and modified date are blank. So is the author information.

I suppose they intended to conceal such information or is there some other way to discover them?

Mike
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Joe Winograd, Fellow&MVEDeveloperCommented:
> I suppose they intended to conceal such information

Very likely! For example, here's the same file as above after I removed the metadata:

eReceipt metadata removed
> is there some other way to discover them?

Not if the metadata has been removed.

Also, if the file originally had other metadata, such as Title, Author, Subject, Keywords (which my original example didn't), they would have been removed, too (along with the Created and Modified dates). Regards, Joe
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Mike EghtebasDatabase and Application DeveloperAuthor Commented:
re:> after I removed the metadata:

In database metadata, for example, is Created: where as "5/4/15 8:14:39 AM" is data.

Why do we refer to "5/4/15 8:14:39 AM" as metadata here?

I get confused about this. What do I miss here?

By the way, your last response will be accepted shortly.

Mike
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Joe Winograd, Fellow&MVEDeveloperCommented:
Mike,

> Why do we refer to "5/4/15 8:14:39 AM" as metadata here?

Because the main content here isn't a database. In a PDF file, the main content (i.e., the "data") are the pages of the PDF file with the words, images, tables, charts, whatever; in a PDF file, information about the main content (i.e., the "metadata") are items such as Title, Author, Subject, Keywords, Date Created, Date Modified, etc. Similar comment can be made for other file types, such as Excel and Word files. And note how much "metadata" there is in a JPG file, especially one created by a camera. All of those EXIF tags would be "data" (fields/columns) in a database, but in a JPG file, the EXIF tags are "metadata", where the main content is the photo/picture. Regards, Joe
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