Title: File::getBase64Data
Published: May 20, 2026

---

# File::getBase64Data(): string|null

## In this article

 * [Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#wp--skip-link--target)

Gets the base64-encoded data for inline files.

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#return)󠁿

 string|null The plain base64-encoded data (without data URI prefix), or null if
not an inline file.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#source)󠁿

    ```php
    public function getBase64Data(): ?string
    {
        return $this->base64Data;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/files/dto/file.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Files/DTO/File.php#L192)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Files/DTO/File.php#L192-L195)

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-files-dto-file/getbase64data/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.1.0](https://developer.wordpress.org/reference/since/0.1.0/) | Introduced. |

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