Password Protect PDF
Encrypt a PDF with a password and control printing and copying.
The open password really encrypts the file: no reader can open it without it. The owner password only turns on printing/copying restrictions that many readers can ignore. No password protects the document once someone with access already has it open in front of them (a screenshot, for instance).
How do you password protect a PDF for free?
Upload the PDF, set an open password, and download the encrypted file — nobody can open it without that password. Everything runs in your browser, so the file never leaves your device or touches a server, and there's no account, watermark, or file limit to worry about. This tool applies real PDF-standard AES encryption, the same mechanism used by Adobe Acrobat: the open password ("user password") genuinely locks the file's contents, and an optional owner password lets you additionally restrict printing or copying in readers that respect those permissions. One thing worth knowing upfront: a PDF password stops the file from being opened, but it can't stop someone who already has it open from taking a screenshot or a photo of the screen.
How to use Password Protect PDF
- Drag your PDF into the drop zone, or click to browse and select it.
- Type the open password and confirm it in the second field; a strength meter updates as you type.
- If you need to restrict printing or copying, expand "Advanced options" and set a separate owner password.
- Click "Protect PDF". The tool encrypts the file and automatically double-checks that it no longer opens without a password before letting you download it.
Common use cases
Emailing pay stubs or bank statements
Before attaching a pay stub, invoice, or bank statement to an email, lock it with a password so only the intended recipient — who you've told the password separately — can open it, even if the message lands in the wrong inbox.
Sharing contracts and internal reports
Protect draft contracts, internal reports, or due-diligence documents before uploading them to a shared drive or sending them to a client, and set an owner password to also discourage casual copy-pasting.
Archiving documents with personal data
Medical records, academic transcripts, or any PDF holding sensitive personal data gains an extra layer of protection if it's ever stored somewhere someone shouldn't have access to.
Delivering paid ebooks or templates
If you sell an ebook, a manual, or a PDF template, an open password makes it harder for the exact file a customer paid for to be casually forwarded around without any friction.
Restricting printing on internal materials
Internal policies or training material that shouldn't be printed or copied outside the company can carry an owner password that switches on those restrictions in compliant readers.
Frequently asked questions
What's the difference between the open password and the owner password?
The open password (user password) is required and genuinely encrypts the file — no reader can display its contents without it. The owner password is optional and only controls permissions like printing or copying in readers that honor those restrictions; it doesn't add any extra encryption of its own.
What happens if I only set an open password and skip the owner password?
The file is just as encrypted and protected against opening. But without a distinct owner password, the printing and copying restrictions have no real effect, because the single password you set also functions as the full-access password.
Does this password stop someone from screenshotting the PDF?
No. The password protects the file while it's locked, but the moment someone enters it and opens the document, they can take a screenshot, a photo, or copy text by hand if the system allows it. No PDF password can prevent that.
What encryption does this tool actually use?
128-bit AES encryption — the same standard PDF mechanism Adobe Acrobat and other commercial editors use, always, regardless of which PDF version you upload. It's real standard encryption, not a cosmetic lock.
Can I use this tool to remove a password from a PDF that's already protected?
No, this tool only adds a password, it doesn't remove one. If your PDF is already encrypted, unlock it first with the PDF unlocker using the password you already know, then come back here to set a new one.
What if I forget the password I set?
There's no way to recover it: everything runs locally and the tool never stores or transmits your password, so it can't help you remember it either. Save it in a password manager before you send the file anywhere.