PDF パスワード追加

PDF にパスワードを追加して保護します。ユーザーパスワードで開封を制限し、オーナーパスワードで権限を管理。

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.