---
schema_version: "1"
id: e45ac70d6431d5380c2c3c5d4ab2d36a5e68c438ab95c66f71b5ebac0ab307e2
title: Asset File Resource
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/bi_dev_guide_rest/bi_resources_assetfiles_id_files_id.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.bi_dev_guide_rest.meta/bi_dev_guide_rest/bi_resources_assetfiles_id_files_id.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: 688972d1489435ad07d6209d170530fa742b4d9e05cbbf2879fddbcc2c109887
description: Returns a preview file for an asset and updates the file.
---
# Asset File Resource

Returns a preview file for an asset and updates the file.

## Resource URL

/analytics​/assetfiles/​<assetIdOrAPiName>/files/​<fileId>

## Formats

JSON

## Available Version

57.0

## HTTP Methods

GET PUT

## Request parameters for GET and PUT

| Parameter Name | Type | Description | Required or Optional | Available Version |
| --- | --- | --- | --- | --- |
| asset​Id​Or​Api​Name | String | The ID or API name of the asset. | Required | 52.0 |
| file​Id | String | The ID of the file. | Required | 52.0 |

## Response body for GET

A binary stream of the contents for the specified file.

## Request body for PUT

A binary preview file.

## Response body for PUT

[Analytics Data Asset File](https://developer.salesforce.com/docs/atlas.en-us.bi_dev_guide_rest.meta/bi_dev_guide_rest/bi_responses_analytics_data_asset_file.htm "A file used for preview of an Analytics data asset.")