PDF 加密碼

為 PDF 檔案新增密碼保護，設定使用者密碼限制開啟，設定擁有者密碼控制權限。

pdfpasswordencryptprotectsecure

Checking Converter Service...

Drag & drop a file here, or click to browse

Supports PDF files

Options

User Password (to open)

Owner Password (optional — for permissions)

The protected PDF will be downloaded automatically after processing.

Output

Privacy: This tool runs entirely in your browser. No data is sent to our servers. We don't store, share, or have access to any of the information you process here.

Examples

Frequently Asked Questions

Q: What is the difference between user and owner password?

A: The user password is required to open the PDF. The owner password controls editing/printing permissions.

Q: Is processing done locally?

A: Yes, all processing happens in your browser. Your files are never uploaded.

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Privacy & Security

This tool runs entirely in your browser. No data is sent to our servers. We don't store, share, or have access to any of the information you process here.