Why password-protect a PDF?
Contracts, salary slips, medical reports, tax returns — a lot of the PDFs you send by email contain information you would rather not see forwarded to the wrong person. Password protection ensures that only recipients with the passphrase can open the file.
Protect a PDF in seconds
1. Open the Protect PDF tool. 2. Upload your file. 3. Type a strong password (use a passphrase, e.g. autumn-koala-42-jazz). 4. Click Convert now — download the encrypted PDF.
The output uses 128‑bit encryption, which is more than enough to stop casual snooping and file forwards.
Best practices
- Share the password separately from the file (e.g. file over email, password over SMS).
- Do not reuse a password you use elsewhere.
- Store a backup in a password manager — recovering a lost PDF password is nearly impossible.
Need to remove protection later?
Use the Unlock PDF tool — supply the original password and get an unencrypted copy ready to edit or share.