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See PDF pages before processing and use page-specific controls when the tool supports them.
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PDF Security
Protect PDF
Encrypt a PDF with an open password.
✓ Free✓ No signup✓ Browser processing✓ Page preview
1Select file2Preview & adjust3Process & download
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About this tool
Protect PDF without complicated software
Protect PDF: Apply PDF password encryption inside your browser so the password and document do not need to be uploaded to this server.
Privacy-first
The selected document is handled inside the browser for supported processing, with no PHP upload endpoint in this build.
Direct download
The finished file is generated for direct browser download without creating a server-side document history.