1. IronPDF
  2. 故障排除
  3. 元数据可见性

元数据可见性

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**哪些内容在元数据类别中可见？

任何能够打开 PDF 的人都能看到元数据。

其中包括以下项目：

Pdf.MetaData.Author = "John Doe";
Pdf.MetaData.Keywords = "Key, Word";
Pdf.MetaData.CreationDate = DateTime.Today;
Pdf.MetaData.ModifiedDate = DateTime.Now;
Pdf.MetaData.CustomProperties.Add("Test", "val");
Pdf.MetaData.Producer = "test";
Pdf.MetaData.Subject = "test metadata";
Pdf.MetaData.Title = "test";
Pdf.MetaData.Creator = "test";

Pdf.SecuritySettings.UserPassword = "ironuser";
Pdf.SecuritySettings.OwnerPassword = "ironowner";
Pdf.MetaData.Author = "John Doe";
Pdf.MetaData.Keywords = "Key, Word";
Pdf.MetaData.CreationDate = DateTime.Today;
Pdf.MetaData.ModifiedDate = DateTime.Now;
Pdf.MetaData.CustomProperties.Add("Test", "val");
Pdf.MetaData.Producer = "test";
Pdf.MetaData.Subject = "test metadata";
Pdf.MetaData.Title = "test";
Pdf.MetaData.Creator = "test";

Pdf.SecuritySettings.UserPassword = "ironuser";
Pdf.SecuritySettings.OwnerPassword = "ironowner";
Pdf.MetaData.Author = "John Doe"
Pdf.MetaData.Keywords = "Key, Word"
Pdf.MetaData.CreationDate = DateTime.Today
Pdf.MetaData.ModifiedDate = DateTime.Now
Pdf.MetaData.CustomProperties.Add("Test", "val")
Pdf.MetaData.Producer = "test"
Pdf.MetaData.Subject = "test metadata"
Pdf.MetaData.Title = "test"
Pdf.MetaData.Creator = "test"

Pdf.SecuritySettings.UserPassword = "ironuser"
Pdf.SecuritySettings.OwnerPassword = "ironowner"
VB   C#
  • 如果只设置了所有者密码，用户就可以完全访问 PDF 元数据，包括查看和修改所有文档属性。
  • 如果只设置了用户密码，则只有拥有密码的用户才能打开 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
如果设置了用户密码，Adobe Acrobat Pro 允许用户通过提供用户密码来编辑 PDF 元数据。相比之下，其他 PDF 阅读器（如 Foxit）除了要求用户提供打开和查看 PDF 的用户密码外，还要求用户提供编辑 PDF 元数据的 OwnerPassword。