Lock & Unlock PDF
Set a secure password to protect personal PDF files against viewing, printing, and copying, or quickly remove document protection with a single click. Works 100% offline ensuring absolute safety.
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Guide to Encrypting & Removing PDF Passwords
Information security is a top priority in study and work. The Lock & Unlock PDF File tool by VNDocs helps you secure sensitive documents with a solid password layer.
1. File Locking Feature (Protect PDF)
When sending a quote, contract, or an important essay to someone else over the internet, encrypting the PDF is extremely necessary:
- Anti-copy & Printing: By setting a password, you can prevent anyone from printing the document or copying text inside without permission.
- Advanced AES Encryption: The system uses the most advanced encryption standard today, ensuring no password cracking software can open the file without knowing the original password.
- How to use: Drag and drop the PDF file into the upload box ➔ Enter the password you want to set ➔ Click Lock PDF.
2. Unlocking Feature (Unlock PDF)
This feature is used to permanently remove the password of a PDF file for which you already know the original password, making future openings more convenient:
- Remove restrictions: Restore previously locked printing, editing, and text copying permissions.
- No storage: Unlike many other websites that upload your file to their server, VNDocs runs 100% on browser power (Offline Mode). Nothing is uploaded to the internet, 100% protecting your private data.
- How to use: Drag and drop the locked PDF file ➔ The system will ask for the current password ➔ Enter the password and click Unlock. The downloaded file will be completely password-free.