Namespace IronPdf.Security

Classes

PdfEditSecurity

Controls PDF editing permissions for password-protected documents. Defines what changes users can make without the owner password.

// Prevent ALL editing:
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.NoEdit;
pdf.SecuritySettings.UserPassword = "read123";
pdf.SecuritySettings.OwnerPassword = "admin456";

// Allow only page management:
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.EditPages;

// Allow full editing:
pdf.SecuritySettings.AllowUserEdits = PdfEditSecurity.EditAll;

Users with owner password always have full access

Actual restrictions depend on PDF viewer compliance

See: https://ironpdf.com/how-to/pdf-security/

PdfEncryptionType

The encryption algorithm used to secure a PDF document's content when a password is applied.

PdfPrintSecurity

Controls PDF printing permissions for secured documents. Restricts how users can print without the owner password.

// Prevent printing confidential docs:
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.NoPrint;
pdf.SecuritySettings.UserPassword = "view_only";

// Allow draft quality printing only:
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.PrintLowQuality;

// Allow full quality printing:
pdf.SecuritySettings.AllowUserPrinting = PdfPrintSecurity.FullPrintRights;

Low quality typically means 150 DPI max

Print restrictions require compliant PDF viewers

See: https://ironpdf.com/how-to/pdf-security/

PdfSecuritySettings

Enterprise-grade PDF security: pdf.SecuritySettings.MakePdfDocumentReadOnly("owner123") Control passwords, 128-bit encryption, permissions for print/copy/edit. Essential for legal, financial, and government documents. Used via PdfDocument.SecuritySettings property.