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## Resource: File ID

## Article: File ID

## Article Link: https://dev.wix.com/docs/api-reference/assets/media/media-manager/files/file-id.md

## Article Content:

# File ID
A file's ID is its unique identifier. It is a read-only property.

It's good practice to save all of a file's properties in your code when you retrieve them.

There are several endpoints that include `fileId` in their response:
* [Import File](https://dev.wix.com/docs/rest/assets/media/media-manager/files/import-file.md)
* [Bulk Import File](https://dev.wix.com/docs/rest/assets/media/media-manager/files/bulk-import-file.md)
* [List Files](https://dev.wix.com/docs/rest/assets/media/media-manager/files/list-files.md)
* [Search Files](https://dev.wix.com/docs/rest/assets/media/media-manager/files/search-files.md)
* [List Deleted Files](https://dev.wix.com/docs/rest/assets/media/media-manager/files/list-deleted-files.md)

## File ID as a parameter
There are several functions that accept a file ID, or an array of file IDs, as a parameter. The parameter is called `fileId`, `fileIds`, or `file.id`. 

In addition to the file ID, these parameters accept the file's Wix media URL. For example, `wix:image://v1/0abec0_b291a9349a0b4da59067f76287e386fb~mv2.jpg/leon.jpg#originWidth=3024&originHeight=4032`. 

This is useful when using other Wix APIs, such as [Wix Data](https://dev.wix.com/docs/rest/business-solutions/cms/introduction.md), that return a media file's Wix media URL, not its ID. For example, if you are retrieving a CMS collection that contains an image field, the image files' IDs aren't returned but their Wix media URLs are returned.