Add password protection to your PDF. Set a strong password to prevent unauthorised access — the encryption happens entirely in your browser and your file is never uploaded.
Frequently asked questions
How strong is the password protection?
The encryption uses AES-128, the standard for PDF protection. Choose a long, unique password — the stronger your password, the harder it is to crack the encryption.
What if I forget the password?
We cannot recover it for you. The password is applied during the encryption process on your device and we never see or store it. Keep your password in a safe place.
Can I set different permissions (e.g. print but not edit)?
Currently the tool applies full password protection that requires the password to open the PDF. Granular permission settings may be added in a future update.
ブラウザ内で完結
Your PDF is processed entirely in your browser. It is never uploaded to any server, and we cannot see or access your files.
その他の PDF ツール
複数の PDF を指定した順序で 1 つのファイルに結合します。
ページまたは範囲を別々の PDF ファイルとして抽出します。
ページをビジュアルに削除・回転・並べ替えできます。
所有する PDF からパスワード保護を解除します。
各ページにテキストまたは画像の透かしを追加します。
任意のページの任意の位置にカスタムテキストを配置します。
Add text, images and signatures to a PDF with drag-and-drop on a live preview.
データは一切保存されません。