About Protect PDF
Apply a real opening password and 文档 permissions locally in the browser.
The source is processed privately in the browser whenever the format allows it. The finished result is created only for 下载.
Private browser processingNo source 文件 stored
Protect PDF
Choose a 文件 or enter content. Processing stays in this browser.
Your selected 文件 never leave this 页面.
准备好就开始
添加文件或内容，然后运行工具。
Working in your browser...