PDF Tools
Protect PDF
Add password protection to PDF files.
Migrated to main site
Protect PDF
Add password protection and permission flags to a PDF directly in your browser.
Encryption
Use a strong password. Permission flags depend on PDF reader support and should not replace legal or access-control safeguards.
Process files to see download results.
Privacy: PDF and image files are processed in your browser. Recommended limit: files under 100 MB or a few hundred pages; encrypted or scanned PDFs may need extra memory.
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FAQ
Does Protect PDF upload my data?
Most main-site tools process input locally in the browser. Website diagnostic tools that request public URLs explain the remote request scope in the tool UI.
Can I use Protect PDF on mobile?
Tool pages use responsive layouts for phone, tablet, and desktop. Large file processing still depends on device memory and browser limits.
Can I download or copy the Protect PDF result?
Migrated tools provide copy, download, or direct result views in the output area depending on the tool type.