حماية وتشفير PDF Document
Encrypt your PDF with a password to restrict access. All processing is completed locally in your browser memory.
اختر ملف PDF
or drag and drop PDF here
Encrypt your PDF with a password to restrict access. All processing is completed locally in your browser memory.
or drag and drop PDF here
Standard cloud lockers require uploading unencrypted PDF archives to their remote environments to append key locks. This poses security and compliance risks. Document Alter executes cryptographic operations directly inside your browser's memory context.
The tool processes your document byte stream locally, combining your custom user password with encryption hashes using @pdfsmaller/pdf-encrypt-lite. The security parameters are compiled directly into the PDF's header catalog metadata dictionary, ensuring robust lock integrity.
Drag and drop the target PDF you want to protect into the secure dropzone.
Enter your chosen password in the input field within the settings sidebar.
Click the 'Encrypt PDF' button to run encryption routines locally and save your password-locked file.
يقوم DocumentAlter بتشفير ملفاتك داخل المتصفح مباشرة وتطبيق كلمات المرور بأمان.
نعم. نظراً لأن التشفير يتم محلياً في الذاكرة، فإن كلمة المرور لا تُرسل عبر الإنترنت أبداً.
تطبق الأداة تشفيراً قياسياً يمنع غير المصرح لهم من فتح المستند دون كلمة المرور.