حماية PDF بكلمة مرور.

20 MiB combined input; 200 pages for structural operations, 60 seconds for QPDF operations. Use 8–200 printable ASCII characters. A random owner password is generated locally. This is encryption, not a cryptographic document signature.

Encrypt a PDF with AES-256 and an opening password. Use 8–200 printable ASCII characters. A random owner password is generated locally. This is encryption, not a cryptographic document signature. Files are processed on your device; no PDF upload is required.

Choose a local PDF and adjust the displayed settings.