Drop Locked PDF File Here
Upload a .lockedpdf file created by FreeChequePrint PDF Lock.
Open a FreeChequePrint .lockedpdf File
This page opens only a .lockedpdf container created by the FreeChequePrint PDF Lock page. It does not remove passwords from ordinary bank statements, Aadhaar PDFs, Form 16 files or other standard password-protected PDFs.
Use the same password that was entered when the .lockedpdf container was created. The decryption is designed to run in the current browser tab; after successful decryption, the original PDF bytes are downloaded for review.
This is not a password-cracking or general PDF-password-removal tool. Without the correct password and a compatible FreeChequePrint container, the file cannot be opened here.
When This Unlock Tool Is Useful
Use this page when a PDF was protected through the FreeChequePrint Lock PDF tool and the original PDF now needs to be recovered on an authorised device.
- Temporary secure sharing: Recover a PDF that was placed in a FreeChequePrint
.lockedpdfcontainer before being shared through another channel. - Local archiving: Open a previously created container and save the recovered PDF in an approved encrypted folder or document system.
- Printing on an authorised device: Recover the original PDF before printing, while keeping the container and password separate during transfer.
- Document workflow: Unlock the container before using the recovered PDF with the organizer, merger or another compatible tool.
Step-by-Step: Open a .lockedpdf Container
The process requires the .lockedpdf file and the exact password used when it was created:
Step one: select or drop the .lockedpdf file created by FreeChequePrint. Standard .pdf files are not accepted by this tool.
Step two: enter the exact password used during locking. The tool cannot recover, guess or reset a forgotten password.
Step three: click “Unlock PDF”. If the password and container are valid, the browser decrypts the stored bytes and downloads the recovered PDF. Open it and check the page count and content.
Why Local Processing is Critical for Financial Documents
Sensitive documents should be handled carefully. The tool is designed to decrypt the container in the browser rather than intentionally upload the selected file and password to the site’s application server.
For standard password-protected PDFs, use software approved by the document owner or organisation. This FreeChequePrint tool supports only its own .lockedpdf format.
This tool uses a strict client-side architecture. The unlock operation is designed to run in the current browser tab using JavaScript rather than intentionally sending the selected PDF and password to our server. No online workflow can promise zero risk, so protect the unlocked copy and follow your bank or organisation's security requirements.
Technical Details: How the Container Is Decrypted
The Lock PDF page uses PBKDF2 with SHA-256 to derive a key from the password and AES-GCM to encrypt the original PDF bytes. The output is a FreeChequePrint container with a .lockedpdf extension, not a standard encrypted PDF.
The Unlock PDF page reads the container header, salt, initialisation vector and encrypted bytes. It derives the same AES-GCM key from the supplied password and, when authentication succeeds, downloads the original bytes as a PDF. A wrong password or modified container causes decryption to fail.
Best Practices for Storing Unlocked Documents
While unlocking PDFs is highly convenient, remember that the bank locked them for a reason. Once you remove the password, anyone who gets access to the file can read it. Follow a few basic hygiene rules:
First, verify the recipient's address carefully before emailing an unlocked bank statement. If you're sending it to your CA, double-check their email ID. Second, if you are unlocking documents to store them on your laptop, ensure your laptop itself has a strong login password and ideally has disk encryption (like BitLocker on Windows or FileVault on Mac) enabled. Third, if you are uploading the unlocked file to a cloud drive like Google Drive or Dropbox, make sure your account has Two-Factor Authentication (2FA) turned on.
Frequently Asked Questions
Can I use this tool to hack or bypass a password I forgot?
No. The tool only opens a compatible FreeChequePrint .lockedpdf container when the correct password is supplied. It does not crack or bypass passwords.
Why do banks and companies password-protect PDFs in the first place?
Passwords are often used to protect documents during delivery. The security requirements and password formats differ by issuer; follow the issuer’s current instructions.
Will unlocking the PDF change the formatting or data inside?
The recovered output is intended to match the original PDF bytes stored inside the container. Open the file and verify it before relying on it.
Is there a file size limit for unlocking?
There is no server-configured file-size limit, but the browser must hold the container and decrypted data in memory. Large files may be slow or fail on devices with limited RAM.
Can I unlock files on my mobile phone?
The interface can run in current mobile browsers that support the required Web Crypto APIs. Performance and download behaviour vary by browser, available memory and device settings.
After recovering the PDF, the PDF Page Organizer can be used to remove or reorder pages. Keep the original container until the recovered PDF has been verified.