Password Protect PDF Files
Add password protection to PDF files online. Secure your documents with encryption for free.
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Drag & Drop PDF here or Click to Browse
Supported: .pdf
or click to browse
Tip: paste a file with Ctrl/⌘+V
Max file size: 100 MBPro: up to 1000 MB
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Frequently Asked Questions
There is no built-in complexity rule in the tool, so choose a strong, unique password that you can store safely.
The output PDF is saved with password protection, so supported PDF readers require the password before the document can be opened.
Yes. If you know the current password, you can remove it later with our Unlock PDF tool.
Yes. Files are transferred over TLS, stored temporarily for processing, then deleted after 24 hours on Free or 7 days on Pro. Files are never shared or sold.