Protect PDF
Add password protection and AES-256 encryption to a PDF before sharing sensitive contracts, reports, forms, or client files.
What it does
Add password protection before sending a PDF containing private information. The protected copy requires the password to open, giving you a practical extra safeguard when sharing contracts, statements or identification documents.
How to use it
Upload one PDF
Drop or browse for the document you want to protect. The tool accepts one PDF up to 50MB.
Set a password
Enter and confirm a password with at least 8 characters.
Protect and download
Run the tool for 2 credits, then download the encrypted PDF from the result link or recent history.
Best for
Client documents
Add password protection to contracts, proposals, invoices, and statements before sending them externally.
Internal reports
Protect financial, HR, operational, or planning PDFs that should only open with the shared password.
Forms and packets
Prepare sensitive onboarding, application, or vendor documents for controlled distribution.
Legal and compliance files
Add a password layer before sharing policies, disclosures, agreements, or review packets.
Downloadable archives
Create protected versions of stored PDFs while keeping the original upload temporary.
Tips for best results
- Choose a unique password that is difficult to guess.
- Send the password through a different channel from the PDF.
- Keep a secure record because a forgotten password cannot be recovered here.
Why use Protect PDF?
Practical advantages built around real creation, selling, and operations workflows.
Clear password setup
Enter and confirm a password with a minimum length check before the protected PDF is created.
PDF-only validation
Uploads are checked for the PDF MIME type, file size, readability, and page limits before processing.
Works in your browser — nothing to install
Upload, process and download from your device without installing desktop software or plugins. Check the tool above for sign-in requirements before starting.
Download recent results again
Signed-in users can find recent successful results in History. Save your own copy after processing so you have it when you need it.
Strong AES-256 encryption
Only people with the opening password can open the protected file. Share the password separately and keep your own secure record.
Protect PDF questions
Answers to common questions before you run the tool.
How many credits does Protect PDF use?
Protect PDF uses 2 credits per successful protected PDF.
Which files can I upload?
The tool accepts one readable, unencrypted PDF file up to 50MB.
What encryption is used?
Protect PDF uses AES-256 PDF encryption.
Does Protect PDF remove passwords?
No. Protect PDF only adds password protection to PDFs you upload.
Is my file kept after processing?
Your upload is used to complete the requested task. Finished files can be downloaded from recent History when you are signed in. There is currently no fixed automatic deletion period for saved results; contact support@azanai.cloud to request deletion. Download a local copy rather than relying on History as your only backup.
What password length is required?
Passwords must be at least 8 characters and must match the confirmation field.
Can I try this tool for free?
A free account starts with monthly credits. Tool access and any available guest trial are shown above; some tools require sign-in or a paid plan. Check the displayed cost before starting. Failed tasks are refunded, and paid plans include non-image tasks under fair use.
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