在线PDF文件加密工具

　　(PdfProtect)在线PDF文件加密工具是一个可以帮助用户把PDF文件进行快速加密的工具，如果你需要把自己的PDF文件加上锁的话，手头又没有工具，那么可以试试这个在线加密工具。

　　网站服务

　　PDF文件的保护机制可以是密码加密，你可以设置不同的权限等级来限制不同用户的使用，可以设置128位的RC4或AES加密，如果同时设置两种口令限制，它们的口令密码不能是相同的;权限可以设置为是否禁止删除、插入内容、旋转页面、是否允许复制文本、图片;是否允许填写表单域和签名域;师傅允许添加注释、填写表单域和签名域。

(PdfProtect) online PDF file encryption tool is a tool that can help users to quickly encrypt PDF files. If you need to lock your PDF files and do not have the tools on hand, you can try this online encryption tool.

Website service

The protection mechanism of PDF files can be password encryption, you can set different permission levels to restrict the use of different users, you can set 128bit RC4 or AES encryption, if you set two kinds of password restrictions at the same time, their passwords and passwords cannot be the same; permissions can be set to whether to prohibit deletion, insertion, rotation of pages, whether to copy text, pictures, and whether to fill in form fields and signature fields The master is allowed to add comments, fill in form fields and sign fields.

Free online service for adding passwords and permissions to PDF files. No installation, no registration, ad**nced options on par with Adobe Acrobat.