🔒
Protect PDF
Add a password to prevent unauthorized access.
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What is Protect PDF?
Proteger un PDF con contraseña evita accesos no autorizados. PDFStream aplica cifrado AES de 128 bits directamente en el navegador.
Puedes establecer una contraseña de usuario (para abrir el archivo) y una de propietario (para restringir edición o impresión).
Casos de uso: proteger nóminas, contratos confidenciales o documentos sensibles.
Compatible con todos los lectores PDF estándar.
How to use
- 1
Upload
Upload the PDF to protect.
- 2
Enter Password
Choose and confirm your password.
- 3
Apply
Click 'Set Password'.
- 4
Download
Download the protected file.
FAQ
Encryption type?▼
Standard PDF password encryption.
Forgot password?▼
We cannot recover it. Keep it safe.
Already encrypted?▼
Unlock it first.
Block printing/copying?▼
Yes, these are options.
Any recovery?▼
None.
Granular control?▼
Yes.
Strong encryption?▼
AES-128/256.
Can I re-protect?▼
Yes, unlock first.
Mobile access?▼
Supported everywhere.
Is it secure?▼
Yes, if the password is strong.
Last updated: June 26, 2026