What kind of protection can I add?

You can set an open password (required to view the file) and restrict printing, copying, and editing.

Is encryption strong?

The tool applies 128-bit RC4 or 128-bit AES encryption depending on the PDF version.

No. Password protection is applied securely in your browser without uploading.

PDF

PDFを保護

PDFにパスワードと権限制限を追加します。

クリックまたはドラッグ＆ドロップ

PDF files only

Passwords

Set passwords to control access and editing.

Open password *

Owner password (optional)

Permissions

Control what recipients can do with the PDF.

Allow printing

Recipients can print the document

Allow copying text

Recipients can copy text from the document

Upload a PDF to protect with a password.

Uses 128-bit RC4 encryption. The owner password controls permission restrictions — leave blank to use the user password as owner password.

PixTrimIO は PDF と画像の作業を、速く・安全に・ブラウザ内で完結させます。 Privacy-first PDF and image tools that run entirely in your browser. Compress, merge, convert, crop, OCR, and edit files online for free without uploading.