Protect PDF Online
Add password protection to PDF files before sharing sensitive documents. The tool uses qpdf-backed encryption on servers where qpdf is installed.
Drop file here or click to choose
.pdf — up to 10MBThis protect pdf helps you handle common PDF conversion, editing, signing, security, and document preparation tasks. It supports PDF files and is ideal for protect contracts, forms, and private documents before sharing, add an opening password to a pdf copy and keep sensitive pdf attachments harder to open accidentally.
Unlike other tools, ConvertWiki focuses on speed, simplicity, and privacy. Your files are processed quickly and are not stored on any server.
You can use this tool for:
- Protect contracts, forms, and private documents before sharing
- Add an opening password to a PDF copy
- Keep sensitive PDF attachments harder to open accidentally
How to use this tool:
- Upload your PDF file up to 10MB.
- The tool prepares a PDF output file without requiring an account.
- Download the converted or processed file directly from the page.
Why use ConvertWiki?
Add password protection to PDF files
Protect PDF is useful when a document should require a password before opening or sharing.
This tool adds password protection to an uploaded PDF and downloads a protected copy. It requires qpdf support on the server.
Common uses
- Protect contracts, forms, and private documents before sharing.
- Add an opening password to a PDF copy.
- Keep sensitive PDF attachments harder to open accidentally.
Frequently Asked Questions
Yes, on servers where qpdf is installed. The deploy script can install qpdf for password tools.
No. Password-based tools should process only the current request and not store files or passwords.
Yes, but the recipient will need the password you choose.
Yes, it is completely free with no signup required.