Protect PDF: Add Password Protection to Files
Emailing salary slips, employment contracts or client proposals without protection can expose private details if a message is forwarded by mistake. The Protect PDF tool lets you add a user password that must be entered before the document opens. Files are uploaded to the server for processing, each file must be under 20 MB, and the download link expires after 60 minutes. Choose a password with at least 12 characters including uppercase, lowercase, numbers and symbols, share it through a separate channel, and store it safely.
Step by step
- Open the Protect PDF tool and upload a PDF under 20 MB from your computer.
- Type a strong password with at least 12 characters, mixing letters, numbers and symbols.
- Repeat the password carefully to avoid typing mistakes.
- Start protection and wait for the server to process the file.
- Download the protected PDF within 60 minutes and test it before sharing.
Example scenario
A human resources officer emails monthly salary slips as PDF files. She opens the tool, uploads a slip under 20 MB, types a 14 character password with mixed letters, numbers and symbols, and downloads the protected copy. She sends the PDF by email and shares the password by phone. Recipients can open their own slips, while forwarded files remain inaccessible without the password.
Check your result
Before sharing the protected file, open it in a fresh viewer session and confirm it asks for the password. Test one correct entry and one wrong entry. Verify the file size is under 20 MB and the download link is used within 60 minutes. Store the password in a password manager and share it through a different channel than the file.
Frequently asked questions
Will the protected PDF work in any reader?
In most cases yes. The tool applies standard password protection that common PDF readers understand.
What password should I choose?
Use at least 12 characters with uppercase, lowercase, numbers and symbols. Avoid names and birthdays.
How long is the download available?
The download link stays active for 60 minutes after processing.
Does a password make the file completely secure?
No. It raises the barrier against unauthorized opening but does not provide absolute security.
Keep an original copy before processing your file. Examples are illustrative; results depend on your document.