Protect PDF: Add a Password Before You Share a File

Business files travel a lot. They get forwarded on WhatsApp, attached to emails, and saved on shared computers. Some of them hold bank details, customer addresses or your cost prices. A password is a simple way to make sure a forwarded file is not readable by whoever happens to receive it. This guide covers what the tool does and when it is worth using.

What Protect PDF does

You add a PDF, choose a password, and download an encrypted copy. The password is used once to encrypt the file and never leaves your device.

This tool runs in your browser. The file is encrypted on your own device and is never uploaded.

• One setting: the password you choose. It is required.
• Accepts PDF files, one or many at a time.
• Anyone opening the protected file will need the password.
• The password is not stored.
• Free, with no sign-in.

How to use it

Decide on the password before you start, and write it down somewhere safe.

• Open Protect PDF and choose your files, or drop them on the page.
• Type the password in the Password box.
• Press Protect PDF.
• Download the protected PDFs.
• Open one of them and type the password to confirm it works.
• Send the password to the receiver separately from the file.

How it helps sellers

Think about the files you send in a normal month. Bank statements and GST papers go to your CA. Price lists go to distributors. Invoices with customer names, phone numbers and addresses go to staff or partners. If any of these is forwarded to the wrong person, a password keeps it closed.

It also helps when several people use the same computer at your shop or warehouse. A protected PDF in a shared folder can be opened only by those who have been given the password.

• Lock bank statements and tax documents before emailing them to your accountant.
• Protect a wholesale price list so only your dealers can read it.
• Secure invoice PDFs that contain customer addresses and phone numbers.
• Protect salary slips or agreements before sending them to staff.

Tips for a clean result

A password only helps if it is hard to guess and easy for the right person to get.

• Send the file and the password by different routes, for example the file by email and the password by phone.
• Keep an unprotected original in a safe place, in case the password is forgotten.
• Avoid obvious passwords such as your shop name or phone number.
• If you need to merge or compress the file, do that first and add the password last.

Common questions