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Protect PDF

Upload a PDF, choose a password, and download a copy that asks for the password to open. Your file is deleted from our server as soon as it is protected.

หรือวางไฟล์ PDF ที่นี่

วางไฟล์ของคุณเพื่อเปิด

PDF ของคุณจะถูกส่งผ่านการเชื่อมต่อที่ปลอดภัย ป้องกัน และลบทิ้งทันทีหลังจากที่คุณดาวน์โหลด

ทีละ 1 ไฟล์, ขนาดสูงสุด 25 MB รูปแบบ: PDF

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What does Protect PDF do?

It makes a copy of your PDF that asks for a password every time someone tries to open it.

Deleted right after protecting

Your PDF and password are sent over a secure connection and deleted as soon as the protected file is ready.

Why use our Protect PDF tool?

Files are not kept

Each file is deleted right after protecting, and the password is never saved.

Fast result

Most PDFs are protected in a few seconds.

Nothing else changes

Pages, text and images stay exactly as they were.

Free to use

No sign-up, no watermark, no software to install.

Protect PDF Online for Free

Use the DailyOnWeb Protect PDF tool to add a password to a PDF. This is useful when you send contracts, invoices, ID copies or reports by email, or when you store sensitive files in the cloud and want only the right people to open them.

How to password protect a PDF

  1. Click Select PDF file, or drop your PDF on the page.
  2. Type a password, then type it again to confirm.
  3. Click Protect PDF and wait a few seconds.
  4. Download your protected PDF. It is saved with -protected added to the name.

Tips for a good PDF password

  • Use at least 8 characters, and mix letters, numbers and symbols.
  • Do not use names, birthdays or common words.
  • Send the password through a different channel than the PDF, for example by phone or chat.
  • We cannot recover a forgotten password, so keep it safe.

Your files stay private

Your PDF and password are sent over a secure connection, used only to protect the file, and deleted from the conversion service right after the download. We do not keep or share your documents or passwords.

Protect PDF is free, works on phones, tablets and computers, and needs no registration.

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