Answer by LF00 for How to check if PDF was modified
You can use some tools to get the pdf file property.I use pdfinfo, you can get many property of the file, and check it.pdfinfo 58dcc41d01293.pdf Author: worker Creator: Microsoft® Word 2016 Producer:...
View ArticleAnswer by xameeramir for How to check if PDF was modified
If you're using Ubuntu linux 18.04 and using Document Viewer then, you canclick on File options (3 vertical line ellipsis)click on Properties...look for Created / Modified fields in the Properties pop...
View ArticleAnswer by Ethan Allen for How to check if PDF was modified
The problem with this is that just opening the PDF on a Mac in Preview and hitting Command-S to save the file will replace both the Creation and Modification date to match the current date/time. So...
View ArticleAnswer by yu-chen-pdfonline-com for How to check if PDF was modified
Are the users modifying the PDF using Acrobat? If so then what Danio mentioned above should work. Strictly speaking, modifying the PDF should change its ModDate or xmp:ModifyDate without changing its...
View ArticleAnswer by danio for How to check if PDF was modified
If the tool used to modify the PDF is working according to the PDF spec then in the Info dictionary it should update ModDate but leave CreationDate alone. You may also see some non-zero generation...
View ArticleAnswer by yu-chen-pdfonline-com for How to check if PDF was modified
It's going to be rough without the original file unless there were security features like encryption or digital signatures applied to it, which it doesn't sound like there was. Do you have access to...
View ArticleAnswer by Bartek for How to check if PDF was modified
You could always check the md5sum of the pdf file. I'm not sure what environment you are using but that should help get you started.
View ArticleHow to check if PDF was modified
I have a PDF generated by 3rd party system. Using PDF editor or els software I have modified it.Is it possible to detect if PDF file was modified, without original file? I will add some more...
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