PDF Locker & Unlocker
Secure your PDFs with a password or remove existing protection easily.
LOCK or Unlock PDF online (free & unlimited) — remove password or lock PDF with password, no sign up
Tired of blocked PDFs and clunky sign-ups? This fast, free tool lets you unlock secured PDFs you own or protect your files with a password in seconds—right in your browser.
What you can do
- Unlock PDF: Remove a password from PDFs you own or have permission to edit, so you can view, print, or copy with ease.
- Lock PDF: Add a password to any PDF to keep sensitive information private before sharing.
- Free and unlimited: Use it as often as you want, with no sign up or hidden paywalls.
- Works in your browser: No installation needed; great on Windows 11, macOS, Linux, Android, and iOS.
- Simple and fast: Clean interface, drag-and-drop support, and quick processing for smooth everyday workflows.
How it works
Unlock a PDF (remove password)
- Upload: Click “Unlock PDF” and add your file.
- Enter password: Provide the current password to authorize unlocking.
- Process: Hit “Unlock.” The tool removes the lock from your authorized file.
- Download: Save the unlocked PDF and use it freely.
Lock a PDF (add password)
- Upload: Click “Lock PDF” and add your file.
- Set password: Choose a strong password you’ll remember.
- Process: Hit “Protect.” The tool applies password protection.
- Download: Save your secured PDF and share confidently.
Tip: Use a unique, strong password you don’t reuse across services.
Why choose this tool
- No account friction: Start instantly—no email, no registration, no verification.
- Unlimited usage: Process as many PDFs as you need, any time.
- Privacy-first: You stay in control; only unlock PDFs you have rights to use.
- Everyday convenience: Ideal for resumes, legal forms, invoices, reports, and study notes.
- Share-ready output: Clean PDFs that open reliably across devices and PDF readers.
Responsible use
- Only unlock what you own or are authorized to access. Respect copyright, contracts, and privacy.
- Protect sensitive data when sharing. Adding a password helps reduce accidental access.
FAQ
- What does “unlock PDF” mean?
Removing an existing password requirement from a PDF you’re authorized to access so it opens without prompting every time. - Do I need the current password to unlock a PDF?
Yes. You must know and enter the correct password to unlock the file. This prevents unauthorized access. - Can I unlock a PDF I don’t have permission to access?
No. Please only use the tool for PDFs you own or are explicitly allowed to modify. - Is this tool really free and unlimited?
Yes. You can lock and unlock as many PDFs as you want without creating an account. - Does it work on Windows, Mac, and mobile?
Yes. It’s browser-based and works on Windows 11, macOS, Linux, Android, and iOS with modern browsers. - Do you store my files?
The tool is designed for quick, transient processing. Avoid uploading confidential documents unless you’re comfortable doing so, and always keep local backups. - What password should I use when locking a PDF?
Use a strong, unique password with a mix of letters, numbers, and symbols. Avoid names, dates, or reused passwords. - Can I remove restrictions like printing or copying?
If the PDF has an owner password and you’re authorized, unlocking removes those restrictions. You still need the correct password to proceed. - Will the unlocked PDF be editable?
Unlocking removes password prompts and restrictions but doesn’t change the document’s underlying content or formatting. Some PDFs may still be limited by how they were created. - Does this change the quality or size of my PDF?
No content is altered when unlocking. When locking, any size change is typically minimal. - Is there a file size limit?
Most PDFs work fine. If a very large file fails, try splitting it or processing a smaller portion. - Can I batch process multiple PDFs?
Process files one by one for the most reliable results. For higher volume, repeat quickly—usage is unlimited. - What if I forget the password I added to a PDF?
There’s no recovery if you forget it. Save your password in a secure password manager. - Does this use encryption when locking a PDF?
The tool adds password protection appropriate for everyday sharing. For highly sensitive data, consider additional security layers like encrypted archives. - Will this work on scanned PDFs?
Yes. Locking/unlocking applies regardless of whether the content is scanned images or text-based. - Can I undo locking without the password?
No. To unlock later, you must enter the password you set. - Is this compliant with laws and policies?
Use is your responsibility. Only unlock with proper authorization and comply with applicable laws, contracts, and organizational policies. - Does it support right-to-left or multilingual PDFs?
Yes. Locking/unlocking is independent of language or layout. - What browsers are supported?
The latest versions of Chrome, Edge, Firefox, and Safari are recommended. - How long does processing take?
Usually seconds for typical documents, depending on file size and your connection. - Can I use this offline?
It’s a web tool; an internet connection is required. - Do you add watermarks?
No. Your output PDFs remain clean and unbranded.