Is locking PDFs free?

Yes. Create a free account to lock PDFs. Free plans include a daily run limit; upgrade to Pro for more runs per day.

What if I forget the password?

DocMatePDF cannot recover a lost password. Store it securely and share it only with intended recipients.

No. Encryption runs locally in your browser. We do not keep copies after you close the tab.

Encrypt sensitive documents with professional-grade AES-256 password protection.

Professional PDF tools—fast, seamless, and ready when you are.

1
Create your free account
Sign up in seconds to encrypt your PDF and download the protected file.
2
Upload your PDF
Drop the document you want to secure and set a strong password.
3
Download the locked PDF
Get an encrypted PDF that opens only with your password — safe to email or store.

Password protection
Keep confidential files behind a passphrase only you and your recipients know.
Private by design
Encryption runs in your browser — your PDF is not uploaded to our servers.
Share with confidence
Send sensitive documents knowing they cannot be opened without the password.
Part of a full PDF toolkit
Lock here, then watermark or compress with other DocMatePDF tools.

Is locking PDFs free?: Yes. Create a free account to lock PDFs. Free plans include a daily run limit; upgrade to Pro for more runs per day.
What if I forget the password?: DocMatePDF cannot recover a lost password. Store it securely and share it only with intended recipients.
Are my files stored on your servers?: No. Encryption runs locally in your browser. We do not keep copies after you close the tab.
How are my activity logs saved while maintaining privacy?: By default, your Activity History is saved locally in your browser. We never upload your documents to our servers for processing. If you create an account, you can optionally sync your activity log across devices, but the contents of your files always remain strictly private.

Create a free DocMatePDF account and add password protection in seconds.