如何使用 Protect PDF
- 打开 protect PDF.
- Upload your PDF file.
- Enter and confirm a password.
- 处理并下载受保护的 PDF。
PDF Tools
Password Protect PDF Online
🔒 Your files are processed securely and automatically deleted after use.
Add password security and permission lock settings to a PDF. No sign-up, no installation, and instant processing.
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