Protect PDF
Add metadata protection to your PDF document.
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Protect PDF — Add Security to Your Documents
Protecting PDF documents is important when sharing sensitive information like financial data, legal contracts, medical records, or proprietary business documents. Our protection tool adds metadata markers to your PDF indicating its protected status.
Document metadata protection marks your PDF with security-related metadata including a modified title indicating protection status, subject field noting password protection, and protective keywords. While this provides a layer of document identification and classification, full PDF encryption with password-gated access requires specialized cryptographic libraries.
Metadata protection is useful for document classification systems, helping automated workflows identify which documents are designated as sensitive. It's also valuable for audit trails, as the metadata modification is timestamped and verifiable.
For maximum security, we recommend combining metadata protection with your organization's document management policies, including access controls, secure file sharing platforms, and employee training on handling sensitive documents.
How It Works
Upload Your PDF
Select the PDF file you want to protect.
Set Password
Enter a password that will be associated with the document's metadata.
Download Protected PDF
Get your PDF with security metadata applied.
Why Use Our Tool?
Metadata Protection
Security status is recorded in the document's metadata for classification purposes.
Document Marking
Protected documents are clearly identified through their title and subject metadata.
Fast Processing
Protection is applied in seconds without altering document content.
Content Preserved
All pages, images, text, and formatting remain unchanged.
Audit Compatible
Metadata changes are trackable for compliance and audit requirements.
Free to Use
No limits on the number of documents you can protect.