> ## Documentation Index
> Fetch the complete documentation index at: https://docs.quickblox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# File Model

> A **file** field type is created to easily work with the content from Custom Objects module. There is an ability to upload, download, update, and delete the content of file fields.

| Property name | Type   | Description                                                                                                                                                                                                                                                                                                |
| ------------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| file\_id      | string | ID of the file.                                                                                                                                                                                                                                                                                            |
| size          | int    | Size of the file in bytes. The max file size is 32 MB.                                                                                                                                                                                                                                                     |
| name          | string | File name.                                                                                                                                                                                                                                                                                                 |
| content\_type | string | <Tooltip tip="MIME content type - Multipurpose Internet Mail Extensions (MIME) is an Internet standard extending the format of email messages by supporting text in character sets other than ASCII, and attachments such as audio, video, images, and application programs."> MIME content type</Tooltip> |