Password protect PDFs

Frequently asked questions

• What is a password-protected PDF file?

  A password-protected PDF is a document secured with encryption that requires a password to open or modify. This security feature prevents unauthorized access to sensitive information like financial records, legal documents, or confidential business data. 
  
  Password protection ensures only people with the correct credentials can view or interact with your PDF content.

• How do you password-protect a PDF before sending it by email?

  To password-protect a PDF before emailing, upload your document to Lumin PDF, select "Security" from the toolbar options, and create a strong password. Download the secured file and share the password separately, preferably through a phone call or secure messaging app, to keep your information safe during transmission.

• Can multiple people access a password-protected PDF at the same time?

  Yes, multiple users can access a password-protected PDF simultaneously if they have the correct password. Lumin PDF's real-time collaboration features allow teams to view and annotate protected documents together while maintaining security. 
  
  Each user needs the password to open the file, but once authenticated, they can work on the document concurrently without compromising protection.

• Does locking a PDF prevent copying, printing, or annotating text?

  Yes, locking a PDF can prevent copying, printing, or annotating text unless you know the password. 
  
  With Lumin PDF, you decide who is trusted by sharing the password with them, giving only those people the ability to access and use these features.

• How can you allow limited editing or annotation in a protected PDF?

  You can allow limited editing or annotation in a protected PDF by controlling who has the password. Share it only with trusted people who need those abilities and withhold it from others to limit their access. By not sharing the password, you decide exactly who can make changes.

• Can you protect a PDF for free?

  Yes. Lumin PDF lets you add password protection to your PDFs for free, directly in your browser. No downloads or paid subscription required.