Skip to main content
D
daniela_sch
Participating Frequently
February 10, 2025
Question

find out changes

  • February 10, 2025
  • 1 reply
  • 876 views
how to find out the changes made to the PDF file before receiving it

 

    1 reply

    try67
    Community Expert
    try67Community Expert
    Community Expert
    February 10, 2025

    Changes compared to what? You can't find out anything until you've received the file and can compare it to something else, like a previous (or different) version.

    D
    daniela_schAuthor
    Participating Frequently
    February 10, 2025

    Thanks. My problem is : i recive from an office a PDF file. I have to find out if this file (which I have never seen and of which I have no other versions) has been manipulated and if YES, how. Could you help me? many thanks

    Daniela

     

    D
    daniela_schAuthor
    Participating Frequently
    February 12, 2025

    The bottom line is this: Any changes to a PDF can be made "invisible", unless that file was previously digitally signed.


    I find the solution !!!!!! I did the tests with a file modified by me. I transform the modified file into html then I read the code: where it has been modified it returns a string (now I'll see how to translate it) where it has not been modified it returns the plain text value of the document. So I can find WHAT was changed even if I can't know the previous value. but I can get to the previous value with the inverse formulas. At the moment is the best first dolution

     
    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices