管理 PDF 中的元数据可见性
Curtis Chau
Updated: 2025年6月10日
元数据类别中可见什么内容？
任何能够打开PDF的人都可以看到元数据。 这些详细信息包括以下项目：
// Assign metadata properties to a PDF document
Pdf.MetaData.Author = "John Doe"; // The author of the document
Pdf.MetaData.Keywords = "Key, Word"; // Keywords associated with the document
Pdf.MetaData.CreationDate = DateTime.Today; // The date the document was created
Pdf.MetaData.ModifiedDate = DateTime.Now; // The date and time the document was last modified
Pdf.MetaData.CustomProperties.Add("Test", "val"); // Custom properties for additional metadata
Pdf.MetaData.Producer = "test"; // The software used to produce the document
Pdf.MetaData.Subject = "test metadata"; // The subject of the document
Pdf.MetaData.Title = "test"; // The title of the document
Pdf.MetaData.Creator = "test"; // The original creator of the document
// Security settings for the PDF
Pdf.SecuritySettings.UserPassword = "ironuser"; // Password to open and view the PDF
Pdf.SecuritySettings.OwnerPassword = "ironowner"; // Password providing full permissions, including editing' Assign metadata properties to a PDF document
Pdf.MetaData.Author = "John Doe" ' The author of the document
Pdf.MetaData.Keywords = "Key, Word" ' Keywords associated with the document
Pdf.MetaData.CreationDate = DateTime.Today ' The date the document was created
Pdf.MetaData.ModifiedDate = DateTime.Now ' The date and time the document was last modified
Pdf.MetaData.CustomProperties.Add("Test", "val") ' Custom properties for additional metadata
Pdf.MetaData.Producer = "test" ' The software used to produce the document
Pdf.MetaData.Subject = "test metadata" ' The subject of the document
Pdf.MetaData.Title = "test" ' The title of the document
Pdf.MetaData.Creator = "test" ' The original creator of the document
' Security settings for the PDF
Pdf.SecuritySettings.UserPassword = "ironuser" ' Password to open and view the PDF
Pdf.SecuritySettings.OwnerPassword = "ironowner" ' Password providing full permissions, including editing' Assign metadata properties to a PDF document
Pdf.MetaData.Author = "John Doe" ' The author of the document
Pdf.MetaData.Keywords = "Key, Word" ' Keywords associated with the document
Pdf.MetaData.CreationDate = DateTime.Today ' The date the document was created
Pdf.MetaData.ModifiedDate = DateTime.Now ' The date and time the document was last modified
Pdf.MetaData.CustomProperties.Add("Test", "val") ' Custom properties for additional metadata
Pdf.MetaData.Producer = "test" ' The software used to produce the document
Pdf.MetaData.Subject = "test metadata" ' The subject of the document
Pdf.MetaData.Title = "test" ' The title of the document
Pdf.MetaData.Creator = "test" ' The original creator of the document
' Security settings for the PDF
Pdf.SecuritySettings.UserPassword = "ironuser" ' Password to open and view the PDF
Pdf.SecuritySettings.OwnerPassword = "ironowner" ' Password providing full permissions, including editing- 当仅设置了所有者密码时，用户可以完全访问PDF元数据，包括查看和修改所有文档属性的能力。
- 当仅设置了用户密码时，只有持有密码的人才能打开PDF。 用户可以查看元数据属性，但修改元数据受到限制。
请注意: Adobe Acrobat Pro允许用户通过提供
UserPassword来编辑PDF元数据。相反，其他PDF查看器如Foxit要求用户提供UserPassword以打开和查看PDF。)}]
Curtis Chau 拥有卡尔顿大学的计算机科学学士学位，专注于前端开发，精通 Node.js、TypeScript、JavaScript 和 React。他热衷于打造直观且美观的用户界面，喜欢使用现代框架并创建结构良好、视觉吸引力强的手册。
