O
OptaPDF
Home Edit PDF Unlock PDF Security

Unlock PDF Security

Use this free Unlock PDF Security online tool to remove passwords and security restrictions from your PDFs. It is built for students, teams, and professionals who need a clean result quickly. Upload, process, and download in a few clicks. Up to 50 MB per file.

Built & maintained by the OptaPDF Team Editorial standards Free · No sign-up · Files auto-deleted in 30 min
Secure TLS/SSL encryption 100% free, no signup Fast browser-based processing
📁

Drag & drop your files here

or click to browse from your device

Supported formats: .pdf (Max size: 50MB)

🔒 Secure temporary processing. Files are auto-deleted after 30 minutes.

Uploading file contents...

✓

Your File is Ready!

The processing step completed successfully. You can download your finalized file below.

📥 Download Processed File
Trustpilot

How to Use Unlock PDF Security

Complete your task in four clear steps.

1

Step 1

Upload your password-protected PDF document.

2

Step 2

If prompted, enter the correct file password.

3

Step 3

Click 'Unlock PDF' to decrypt file permissions.

4

Step 4

Download your completely unlocked, unrestricted PDF.

Why Choose OptaPDF for Unlock PDF Security?

  • ✅ Removes print, copy, and structural modification restrictions.
  • ✅ Saves a completely decrypted version for unrestricted future access.
  • ✅ 100% free, private, and secure with auto-deletes.

Security Guarantee

Your upload is protected with TLS/SSL encryption. Files are automatically and permanently deleted from our servers after 30 minutes. We do not read, share, or store your content. OptaPDF works on iOS, Android, Chrome, Safari, Edge, and desktop browsers without an app installation.

⭐ Related Productivity Tools

Keep going — these tools pair perfectly with what you just did.

Protect Pdf → Repair Pdf → Edit Pdf →
📖 Recommended Reading
How to Remove a Password from a PDF (Unlock It) — 2026 →

Frequently Asked Questions About Unlock PDF Security

Get answers to common queries regarding security, speeds, and bounds of this tool.

If the PDF requires a password to open (User Password), you must provide the correct password to unlock it. We do not support illegal cracking of files.
If the file has permissions restrictions (Owner Password) but does not require an opening password, our engine can instantly decrypt and unlock it without any prompt!
Yes, OptaPDF's Unlock PDF tool is 100% free with no premium barriers or limits.
The unlocked PDF is saved with '_unlocked.pdf' appended to its base filename (e.g., x_unlocked.pdf).
No. Your password is used purely in-memory to decrypt the file and is never logged or saved. Files are auto-deleted in 30 minutes.
Yes, our mobile-friendly interface makes it easy to upload, enter passwords, and decrypt files on the go.
No, OptaPDF does not add watermarks.
We support uploads up to 50MB.
Yes, the resulting PDF is saved with standard formatting, allowing unrestricted access in all viewers and devices.
We will display a friendly error message on the screen so you can doublecheck and try again safely.