Need to send a sensitive document or keep a file private? Password-protecting a PDF is one of the easiest ways to secure your information from unauthorized access. Whether you're sharing contracts, financial records, or internal reports, adding password protection helps ensure only the right people can view your content. In this guide, we’ll show you simple ways to add a password to a PDF using built-in tools and trusted third-party options.
1). Open the PDF document that you would like to password protect.
2) Click View>Tools>Protect>Open (See below screenshot)
3) On the toolbar click Encrypt>Encrypt with Password. (See below screenshot)
4) In the Password Security window, place a check mark next to ‘Require a password to open the document’. (See below screenshot covering steps 4 and 5)
5) In the blank field next to ‘Document Open Password’ insert the password you would like to use to protect the PDF, then click OK. (See below screenshot covering steps 4 and 5)
6) After clicking OK, the below box will appear asking you to re-enter the document password. Re-enter the document password and click OK.
7) From step 6 after clicking OK the following box will appear as a reminder that the password will not be applied to the PDF until the PDF is saved.
8) Close the PDF and you will be prompted with the below prompt to Save changes. Click ‘Yes’.
9) Once you have reached this point you have successfully password protected a PDF. From this point forward each time the PDF is opened the user will need to know the document password in order to open the PDF.
🔐 Need Help Securing Sensitive Documents?
Protecting PDFs with passwords is a smart first step — but for truly secure file handling, professional support can make all the difference. At Landon Technologies, we offer cybersecurity solutions, remote support, and technical assistance to help keep your data safe and your systems secure.
- PDF encryption and secure sharing guidance
- Email and file transfer security
- System-level data protection and backups
- Ongoing support for secure workflows
📍 We support professionals and teams in Houston, TX and nationwide with file security best practices.
Explore Our Data Protection Services
💡 Small Business Tech Tips
💡 IT Advice for Small Businesses
Get practical tools and time-saving strategies in our
👉 Small Business Tech Tips Blog Category
Valuable information. Thanks for the sharing. I’d also recommend Acethinker pdf writer that I have used for many years. It can add password to pdf document easily, share it here as an alternative to adobe acrobat dc.