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Table of Contents
Select the "Protect PDF" function after opening the file
Set password and select protection level
Test whether the password is effective
Home Software Tutorial Computer Software How to add a password to a PDF with Adobe Acrobat?

How to add a password to a PDF with Adobe Acrobat?

Jul 12, 2025 am 12:24 AM
password pdf

The method of adding password protection to PDF files using Adobe Acrobat is as follows: 1. After opening the file, select the "Protect PDF" function in the "Tools" menu to ensure that you are using Acrobat Pro or subscribe to Adobe online services; 2. Set the password to open and edit permissions. It is recommended to set a complex password and check "Disable copying of text and graphics" to enhance security; 3. Save as a new file or overwrite the original file to ensure that the encryption takes effect; 4. Test whether the password is effective, check whether the file can be opened successfully and whether the restrictions work; 5. If you need to cancel password protection, you can modify or delete it in the same function, provided that you remember the original password.

How to add a password to a PDF with Adobe Acrobat?

Adding password protection to PDF files is a common way to protect sensitive information. If you use Adobe Acrobat, this process is not complicated, just know the correct operation path.

How to add a password to a PDF with Adobe Acrobat?

Select the "Protect PDF" function after opening the file

The encryption function of Adobe Acrobat is in the Tools menu, find the "Protect PDF" option. After clicking, the system will ask you to upload the file (if it is the online version), but if you are using the desktop version of Acrobat Pro, just operate the opened document directly. The key to this step is to confirm which file you want to encrypt and make sure it is editable.

How to add a password to a PDF with Adobe Acrobat?

If you don't see this option, it may be that you are using the free version of Reader, which does not support this feature. Remember to have to be Acrobat Pro or subscribe to Adobe's online service.

Set password and select protection level

After entering the settings, you will be prompted to enter an open password and an edit permission password . The former is used to control who can open the file, and the latter decides whether others can modify, copy or print your PDF. You can set only one of them, but for more comprehensive protection, it is recommended to set both.

How to add a password to a PDF with Adobe Acrobat?

Here are a few details to note:

  • Try to make the password more complicated to avoid being easily cracked.
  • Editing permission passwords can be different from opening passwords, or the same, depending on your own convenience.
  • If you don't want others to copy text content, remember to check "Prohibit copying text and graphics".

After the setup is complete, Acrobat will let you save the file. Remember to save as a new file or overwrite the original file, otherwise the settings will not take effect.

Test whether the password is effective

Don't rush to send it to others after setting it up, test it yourself first. Close the file and open it again to see if you need to enter a password; try to copy a paragraph of text to confirm whether it is restricted. If any step doesn't work, go back and check if there are any missing places in the settings.

In addition, if you want to cancel password protection in the future, you can also modify or delete password in "Protect PDF". But the premise is that you still remember the original password.

Basically these steps. It doesn't seem difficult, but it may be in vain if there is a slight operational error.

The above is the detailed content of How to add a password to a PDF with Adobe Acrobat?. For more information, please follow other related articles on the PHP Chinese website!

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