Enable Permissions

Supported on: Firefox 77 or later

Registry

HKLM Software\Policies\Mozilla\Firefox\PDFjs

HKCU Software\Policies\Mozilla\Firefox\PDFjs

Value name: EnablePermissions

Enabled: EnablePermissions = 1

Disabled: EnablePermissions = 0

Description

If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text. If this policy is disabled or not configured, document permissions are ignored.