Encrypt PDF

Encrypt PDF files with a password to ensure the confidentiality of sensitive data.

Try these now PDFs:

Local Run

Encrypt PDF: Secure Your Documents with High-Level Protection

Safeguard your confidential information with our professional Encrypt PDF tool. In an era where data privacy is paramount, locking your sensitive documents with a robust password is the most effective way to prevent unauthorized access. Whether you are handling financial reports, personal identification documents, or proprietary business contracts, our tool allows you to set a strong owner password to restrict opening and viewing the content.

This tool is engineered for 100% privacy and security. Unlike traditional online converters, your files never leave your device. The encryption process happens entirely within your web browser. This means there is no uploading of data to any remote server, eliminating the risk of data breaches or interception. You can secure your PDFs with peace of mind, knowing your documents remain strictly in your control.


encrypt pdf add password

Key Features

  • Browser-Based Processing: All encryption logic runs locally. No data transfer occurs, ensuring maximum secrecy.
  • No Sign-Up Required: Enjoy a hassle-free experience with no login, no registration, and no subscriptions needed.
  • Batch Encryption: As shown in the interface, you can add multiple PDF files (e.g., try_pdf_1 through try_pdf_5) and lock them all simultaneously to save time.
  • Instant Security: Set your password, click start, and your files are immediately locked and ready for download.

How to Password Protect a PDF

  1. Click "Add PDFs" to select the documents you wish to secure.
  2. Enter your desired password in the "Set PDF owner password" field.
  3. Re-enter the password to confirm accuracy.
  4. Click the "Start" button. Your browser will process the encryption instantly.

Frequently Asked Questions (Q&A)

Is it safe to encrypt my private documents here?

Absolutely. Because the process is 100% browser-based, your files are never uploaded to the internet. We do not store, view, or transfer your data. Security is guaranteed by the architecture of the tool.

Do I need to install software?

No. This tool works directly in your web browser (Chrome, Edge, Firefox, Safari). It provides desktop-class performance without the need for bulky software installations.

Is there a usage limit?

You can encrypt multiple files without arbitrary limits. Since the processing power comes from your own device, there are no server-side queues or restrictions on file counts.

What happens if I forget the password?

Please remember your password carefully. Since we do not store your data or passwords, we cannot recover the password for you once the file is encrypted.