---
title: "PdfMetadata"
canonical_url: "https://www.nutrient.io/api/csharp/editors/pdf/pages/pdf-metadata/"
md_url: "https://www.nutrient.io/api/csharp/editors/pdf/pages/pdf-metadata.md"
last_updated: "2026-10-08T08:55:57.709Z"
description: "Provides access to PDF document metadata properties including standard document information dictionary fields and XMP metadata."
---

Provides access to PDF document metadata properties including standard document information dictionary fields and XMP metadata.

This class allows reading and writing of standard PDF metadata fields such as title, author, subject, and keywords, as well as custom metadata properties. All changes to metadata properties are immediately applied to the underlying PDF document.

```csharp

using Nutrient;

```

The SDK creates this class through factory methods or other SDK objects.

## Properties

### Author

```csharp

public string Author { get; set; }

```

The name of the person that created the document.

**Type:** `string`

### CreationDate

```csharp

public string CreationDate { get; }

```

The date and time the document was created.

**Type:** `string`

### Creator

```csharp

public string Creator { get; set; }

```

The name of the application that created the original document.

**Type:** `string`

### Keywords

```csharp

public string Keywords { get; set; }

```

The keywords associated with the document.

**Type:** `string`

### ModificationDate

```csharp

public string ModificationDate { get; }

```

The date and time the document was most recently modified.

**Type:** `string`

### Producer

```csharp

public string Producer { get; set; }

```

The name of the application that converted the document to PDF.

**Type:** `string`

### Subject

```csharp

public string Subject { get; set; }

```

The subject of the document.

**Type:** `string`

### Title

```csharp

public string Title { get; set; }

```

The title of the document.

**Type:** `string`

### XMP

```csharp

public string XMP { get; set; }

```

The XMP metadata stream of the document.

**Type:** `string`

## Methods

### GetCustomPDFInformation

```csharp

public string GetCustomPDFInformation(string key)

```

Gets the value of a custom metadata property from the document information dictionary.

**Parameters**

| Name  | Type     | Description                                  |
| ----- | -------- | -------------------------------------------- |
| `key` | `string` | The name of the custom property to retrieve. |

**Returns:** `string` - The value of the custom property as a string. Returns an empty string if the property does not exist.

### SetCustomPDFInformation

```csharp

public void SetCustomPDFInformation(string key, string value)

```

Sets the value of a custom metadata property in the document information dictionary.

**Parameters**

| Name    | Type     | Description                                 |
| ------- | -------- | ------------------------------------------- |
| `key`   | `string` | The name of the custom property to set.     |
| `value` | `string` | The value to assign to the custom property. |

## Resource management

```csharp

public void Dispose()

```

`PdfMetadata` implements `IDisposable`. Call `Dispose()` or use a C# `using` declaration to release its native handle right away. If you don't, the handle is released when the object is garbage collected.

---

## Related pages

- [Pages](/api/csharp/editors/pdf/pages.md)
- [Pdf Page Collection](/api/csharp/editors/pdf/pages/pdf-page-collection.md)
- [Pdf Page](/api/csharp/editors/pdf/pages/pdf-page.md)