Unlock PDF
Remove password protection from a PDF. You must know the password.
Server-side processing
This tool uses qpdf on our server to decrypt the file. The file is sent over HTTPS, processed, and deleted immediately. We never store your PDF or password.
Remove password protection from a PDF you own. Server-side qpdf, free, no logging. You must know the password.
Unlock PDF removes password protection so you can edit, copy, print, or share a PDF without entering credentials each time. This is for PDFs you protected yourself or received with the password — not for cracking unknown passwords (which this tool deliberately does not do).
Pick Rack's Unlock PDF tool uses [qpdf](https://qpdf.sourceforge.io), the open-source PDF transformation library, server-side. You upload over HTTPS, provide the password, and receive the unlocked PDF. The file and password are deleted immediately — nothing is logged.
Free, no signup, no watermark. Files up to 100MB.
Key features
- Industry-standard qpdf engine — qpdf is used in the Linux ecosystem for decades — reliable on edge cases other tools miss.
- AES-256 supported — Modern encryption (AES-128, AES-256) and legacy RC4 all work, given the correct password.
- No logging — Your password is held in memory only for the duration of the qpdf call (a few seconds), then garbage-collected. Server logs do not record passwords.
- Clear error on wrong password — If the password is incorrect, the tool returns a clean "Wrong password" message rather than failing silently.
- Free, no signup — No daily quota, no premium tier. Use as often as needed.
How to use
- Step 1: Upload protected PDF — Drop or click to add the encrypted PDF (up to 100MB).
- Step 2: Enter the password — Type the password you used to protect the file (or the one provided to you).
- Step 3: Click Remove password — Server decrypts in under 5 seconds for most files.
- Step 4: Download unlocked.pdf — The output has all original content but no password requirement.
When to use
- You forgot you protected an old PDF and want to share it freely now
- You received a protected PDF with the password and need a clean copy for your archive
- You need to use the PDF in a workflow that doesn't support encrypted files (Notion upload, certain RSS readers)
- You're consolidating PDFs and want to merge/edit without re-entering the password each step
- You want to add OCR to a protected scanned PDF and your OCR tool requires unprotected input
Frequently asked questions
Will this tool crack a password I don't know?
No. This tool deliberately does not attempt to brute-force or guess passwords. It requires the correct password, then removes the encryption. Tools that crack PDF passwords exist but are intended for security research, not casual use.
Is sending my password over the internet safe?
The connection is HTTPS-encrypted end-to-end, so no one can intercept the password in transit. The server holds it in memory only during the qpdf call, then releases it. Server access logs do not capture form data. For extreme paranoia, run qpdf locally: apt install qpdf, then qpdf --decrypt --password=YOUR_PWD input.pdf output.pdf.
What's the difference between user password and owner password?
User password (open password) is required to view the PDF. Owner password limits actions (printing, copying) for users who can already view. This tool removes user-password protection. If your PDF has only an owner password, qpdf can usually remove it without any password.
Can I unlock a PDF protected with AES-256?
Yes. qpdf supports AES-128 and AES-256, the modern PDF encryption standards. Older RC4 protection also works.
What if qpdf fails to unlock my file even with the right password?
Some PDFs are corrupted or use non-standard encryption. The tool returns a clear error in that case. Try opening the file in Adobe Reader or Foxit, then save-as a new PDF to normalize it before unlocking.
Does the unlocked PDF have any difference from the original?
Content is identical — text, images, fonts, structure all preserved. The only change is that encryption metadata is removed. File size is typically very slightly smaller after unlocking.
Is this legal?
Yes, when you have permission to access the PDF. This tool does not bypass DRM (which is illegal in many jurisdictions) — it only removes password protection that you have the right to remove. Don't use it on PDFs you don't own or aren't authorized to access.