Learn how to import a single asset to Kontent.ai and use the asset in a content item.
Importing assets using the Management API is a 3-step process.
Upload a file to Kontent.ai.
Create a new asset using a reference to the uploaded file.
Link to the asset from a content item's language variant.
The result has the following structure:
To upload a file via API, send a POST request to the <YOUR_ENVIRONMENT_ID>/files/<YOUR_FILE_NAME> endpoint with your project's environment ID and your file name filled in. For example, 975bf280-fd91-488c-994c-2f04416e5ee3/files/my%20file%232.png.
Set the Content-type header to the MIME type matching your file. For example, for a jpg image set the header to image/jpeg.
Set the Content-length header to a number matching the size of the file in bytes. For example, if the image is 12 kB, set the header to 12288.
Don't forget to set your Management API key in the request's authorization header (or the ManagementClient definition when using an SDK).
You can only upload files from local storage. The Management API doesn't support uploading files from a URL.
This returns a file_reference object.
You'll use the file_reference object to create the actual asset in the next step.
To create an asset using the uploaded file, it's best to perform an upsert operation. This way, you can send the request repeatedly to update your asset.
This means sending a PUT request to the <YOUR_ENVIRONMENT_ID>/assets/external-id/<ASSET_EXTERNAL_ID> endpoint with your project's environment ID and an external ID of your choice for the asset filled in.
In the body of the request, specify these properties:
file_reference – use the file reference you obtained in the previous step to link the asset with your file.
When the file is used in an asset, certain special characters (/ \ : * ? " < > | % # & { } $ ! ' ` ~ ^ + = [ ] ; @) are automatically replaced with underscores (_) as part of the sanitization process.
(Optional) title – specify a title for the asset (displayed in the administration interface).
descriptions – specify an asset description for each language.
language – can be specified by its codename or internal
To verify the creation of the asset, you can view it in Kontent.ai:
The content of an item is stored in a specific language variant. Within the language variant, you can use the imported asset in asset and rich text elements. The asset might need to meet the limitations set for the item's content type.
id
.
description – string with a description of the asset.
Sign in with your Kontent.ai credentials or sign up for free to unlock the full lesson, track your progress, and access exclusive expert insights and tips!
URL-encode reserved charactersIf the name of your file contains reserved characters, you need to URL-encode the file name first. For instance, use my%20file%232.png instead of my file#2.png.
Best practice: Referencing by external IDMake it easier to reference your asset from content items by specifying an external ID. External IDs can point to non-existent (not yet imported) content. This way, you can import your assets and content items in any order and not worry about dependencies.See referencing by external ID for more details.