Recommend two software that can set "open password" for PDF

If you want to set an "open password" for PDF files, you need to use special software tools. You can try the following two softwares.
Software 1: PDF Editor
The PDF editor can not only be used to read and edit files, but also has password functions.
Take Foxit as an example. After opening the PDF file through the editor, click [Password Encryption] in the [Protect] list of the menu tab.

After the dialog box pops up, enter and confirm the password again in the password field, then click [OK], and the "Open Password" of the PDF file will be set.

If subsequent PDF files no longer require password protection, that is, you do not want to "enter the password" every time you open the file, you can also remove the "open password" through the PDF editor.
First, open the PDF file through the PDF editor. You need to enter the originally set password to open the file.

After opening the PDF file, click [Remove Security Settings] in the [Protection] list of the menu tab.

After the "Confirm" reminder pops up, click [OK], and the "Open Password" of the PDF file will be deleted.

Question: How to set an opening password for PDF files? Quick Description: Setting a password for a PDF file helps protect its contents from unauthorized access and ensures its confidentiality. This guide will show you two ways to set a PDF opening password, including using Adobe Acrobat and the PDF Multi-Tool. Details: In this article, PHP editor Xiaoxin will guide you step by step to use Adobe Acrobat and PDF multi-tool to set an open password for PDF files. You will learn: How to add an open password in Adobe Acrobat How to set a password in PDF multi-tool How to set a password using the command line method By reading this guide, you will master the necessary knowledge to set an open password for PDF files to protect your files Confidentiality and Integrity.

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