Add a password to a PDF before sending on WhatsApp
Lock a document before you share it in a chat, without uploading it.
Documents sent on WhatsApp sit in the chat and often in the recipient’s cloud backup, viewable by anyone with the phone. Putting a password on a sensitive PDF first keeps it locked even then. This tool encrypts the file in your browser, so it is never uploaded to add the password.
How to password-protect a PDF for WhatsApp
- 1
Add your PDF
Drop in the document you are about to send.
- 2
Set a password
Choose a strong password needed to open it.
- 3
Encrypt and send
Attach the protected PDF in WhatsApp and share the password another way.
Why lock chat attachments on your device
Once a file is in a chat it is out of your hands and into backups. Encrypting it locally first means it stays protected regardless of where the chat is stored.
Frequently asked questions
Why protect a file before WhatsApp?+
Chats are backed up to the cloud and visible on an unlocked phone. A password keeps a sensitive file locked wherever it ends up.
Is my file uploaded here?+
No. Encryption runs in your browser; only the protected file goes into your chat.
How do I share the password?+
Send it through a different channel, such as a call, not the same chat.
Is it free?+
Yes, with no sign-up.