Can this tool detect whether a PDF is password protected?
Yes! It immediately identifies user passwords, owner passwords, and specific encryption algorithms (such as 128-bit or 256-bit AES).
Inspect comprehensive PDF properties: exact page dimensions (A4, Letter), PDF version, page count, file size, font list, and orientation.
100% Free & Private — Processed entirely inside your web browser without server uploads
🚀 Open 📊 Inspect PDF InfoTroubleshooting why a PDF won’t upload to a strict government portal or why a commercial print shop rejects a file requires inspecting the document’s technical specifications — such as PDF version (1.4 vs 1.7), page box dimensions, and font embedding status.
SmallPDF Pro’s PDF Info Inspector provides an immediate, deep technical breakdown of any document directly inside your web browser.
With zero server uploads, complete client-side security, and instantaneous parsing, you can verify document compliance and troubleshooting details in seconds.
Drop your PDF into the tool to initiate immediate client-side structural parsing.
Review page count, exact dimensions (inches/mm), PDF specification, and permissions.
Verify whether the document is encrypted, password-protected, or has restricted flags.
Copy or save the technical breakdown summary for your records or print vendor.
Yes! It immediately identifies user passwords, owner passwords, and specific encryption algorithms (such as 128-bit or 256-bit AES).
You can use our "Unlock PDF" tool to remove restrictions and decrypt the document.
No. Analysis is performed 100% locally inside your browser.