Regularly.. I wish to update the modified dates of files, based on the dates mentioned IN the documents.

For instance, a list of PDF files, or JPG/PNG files, all in the same folder.

Right now, the process is like this:
- open each single file
- remember the date displayed (or write it down)
- close the file
- change the file with some attribute change tool
- open the next file
.. and so on.

Am seeking a tool that:
-shows the contents of a file
-so I can change the modified date shown
then click on [Next] to display the contents of the next file
and so on.

I.e. no need to open/close, open/close...remember dates

Most attribute changers can handle 1 file only, or batch (all having the same date) but do not have preview of the contents.

Any suggestions?