Adobe Acrobat

Password protect a PDF

Drag and drop a PDF, then add a password to protect your file.

Password protect a PDF for free

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How to password protect your PDF for free

Imagine you’ve got an important file with sensitive data – it needs protection, with restricted access granted to specific people. That’s where Adobe comes in. Create a PDF password in four simple steps. All you need to do is:

https://video.tv.adobe.com/v/3430228?hidetitle=true

  1. Upload a PDF by clicking the Select a file button or by dragging it into the drop zone.
  2. Enter a password, then retype to confirm it.
  3. Click Set password.
  4. Download the password-protected PDF document or sign into your free Adobe Acrobat account to share it with others.

Try our free PDF password protection tool

When you password protect a PDF, you keep sensitive information secure, giving you control over who can access it. It also helps ensure your documents comply with GDPR and other data protection standards, providing peace of mind when sharing files.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/protect-pdf.svg | A PDF file with a lock representing a password protected PDF

Password protect PDF files in just a few clicks

Use the free online PDF password protection tool from Adobe Acrobat to keep your files secure. Simply click ‘Add a Password’ to encrypt your PDF and restrict access to only those you authorize.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/private-pdf.svg | A badge with a lock representing protected content

Protect sensitive content in your PDF

Handling personally identifiable information like dates of birth or addresses? Password protect your PDF using our free online tools to ensure only those you authorise can access the document. This is crucial if you want to ensure you’re compliant with GDPR guidelines.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/restrict-authorization.svg | A lock with a no symbol showing how you can restrict unauthorised access to your PDF

Restrict unauthorised people from accessing your PDF file

Want to make sure your files are locked down to unauthorised viewers? Use our free Adobe Acrobat online tools to password protect your PDF and keep prying eyes locked out. Only those you’ve permitted can access your PDF file.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/reliable-pdf.svg | A PDF with a scale showing that you can choose your password strength

Create a strong password for your PDF

Passwords should be strong and secure – otherwise what's the point? Create a password to protect a PDF for free using Adobe Acrobat online tools and we'll use established standards to tell you whether it's up to scratch.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/nothing-to-install.svg | A cloud with the Acrobat logo showing that you can use Adobe Acrobat online services without installing any software

No need to install any software

Need to get to work fast? With Adobe Acrobat, all you need to access our online PDF tools is the internet. Launch Google Chrome or Safari and get to work. Drag, drop and away you go. Forget about downloading additional software.

https://main--dc--adobecom.aem.page/dc-shared/assets/images/shared-images/frictionless/seo-icons/best-pdf.svg | A PDF protected with trusted password security

PDF password security you can trust

Adobe created the PDF. As the inventor and pioneer of this file format, we know best how to keep it safe and secure. Password-protect your PDF documents for free using Adobe Acrobat online tools for added peace of mind.

Questions? We have answers.

Why password protect your PDF?

A password protected PDF is a simple way to restrict who access to sensitive information. Adding a password to a PDF ensures that only those with the code can access it. It’s great for safeguarding sensitive customer data, ensuring privacy, and creating trust. Some examples of password protected PDFs:

  • Client proposals for account leads/strategy management
  • Financial reports only for the relevant stakeholders
  • Restricting access to policy documents
  • Employer contracts
How do I password protect a PDF file for free?
It’s totally free, easy and super quick to password protect a file with Adobe Acrobat online. Just choose your PDF by clicking Select a file above, or dragging it into the drop zone box, then set a password and download your new document. From there, it’s ready to share safely.
Why can’t I password protect my PDF?
You should find that you can password protect most PDFs using Acrobat online. However, you might find that some files appear with a “bad parameter” error message. If this happens, don’t sweat it – just save a copy of your file, reupload it, and try again.
Are password-protected PDFs safe?
The internet isn’t always a safe place, but Adobe Acrobat helps keep your documents as safe as can be. When you password protect a PDF or other document with Adobe Acrobat, we encrypt it too for extra security. But you can access additional security measures with Adobe Acrobat Pro.
How do I choose a strong password to protect a PDF?

Passwords should always be unique. Try to make the password long. Don't use any personal information or the type of everyday words someone may be able to guess.

Assembling seemingly random words with zero connection can be one idea. And try to increase its complexity with numbers and special characters.

How do I unlock a password-protect PDF?
If someone sends you a password-protected PDF file, you'll have to enter the password when opening it. Enter the password and hit  OK  and you'll be able to access the file. If the document owner has Adobe Acrobat Pro, they can also remove the password using the Unlock Tool.
What's the difference between password protection and encryption?
When you password protect a PDF, it restricts access to the file. Encryption scrambles the content, requiring a digital key (like a password) to unlock it. Acrobat online encrypts files when password-protected. For advanced security, use Acrobat Pro to encrypt with certificates and control permissions. Try Adobe Acrobat Pro free for 7 days.

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