Protect PDF
Process your PDF files online quickly and securely.
Drag & drop your PDF here
or click to select file
How to use Protect PDF
- Upload or drag & drop your file into the box above.
- Click the “Protect PDF” button and let the tool do the work.
- Download your result — files are processed securely and removed automatically.
About Protect PDF
Process your PDF files online quickly and securely.
Features
- 100% free — no watermarks and no sign-up required.
- Secure processing over HTTPS; uploaded files are auto-deleted.
- Works in any modern browser on desktop, tablet and mobile.
Frequently asked questions
Is this tool free to use?
Yes. It is completely free with no sign-up and no watermarks.
Are my files safe?
Files are transferred securely and deleted automatically after processing.
User Guide
- Upload the PDF document you want to encrypt.
- Choose a strong password to protect access.
- Apply strong encryption to lock the file.
- Download the encrypted PDF — unreadable without the password.
About the Encrypt PDF Tool
Lock a PDF with strong encryption so it can only be opened with the correct password. It safeguards private documents against unauthorised access if the file is shared, stolen or misplaced.
A must for professionals handling sensitive contracts, statements and personal records.
Frequently Asked Questions
How do I encrypt a PDF?
Upload the PDF, set a strong password, and the tool locks the file with encryption so it cannot be opened without it.
Is the Encrypt PDF tool free?
Yes, it is free with no sign-up and no watermark.
What is the difference between protecting and encrypting a PDF?
They achieve the same goal here — the file is encrypted so only someone with the password can open it.
Can I encrypt multiple PDFs?
You can encrypt files one after another, as many as you need, at no cost.
Will encryption affect the document quality?
No. Encryption only controls access; your text, images and layout are untouched.