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

# Blobs

export const LwTemplate = ({title = "Key questions to get you started", icon = "sparkles", cta = "Powered by Agent Studio", linkHref = "https://lucidworks.com/demo/?utm_source=docs&utm_medium=referral&utm_campaign=docs_cta_ai"}) => {
  const [isLoaded, setIsLoaded] = useState(false);
  useEffect(() => {
    const timer = setTimeout(() => {
      setIsLoaded(true);
    }, 500);
    return () => clearTimeout(timer);
  }, []);
  return <div className="lw-template-container">
      <Card title={title} icon={icon}>
        {isLoaded && <span dangerouslySetInnerHTML={{
    __html: `<lw-template id="a029c1a9-28be-427e-b0e1-5d918920246a"></lw-template
            >`
  }} />}
        <Link href={linkHref} className="agent-studio-link text-left text-gray-600 gap-2 dark:text-gray-400 text-sm font-medium flex flex-row items-center hover:text-primary dark:hover:text-primary-light group-hover:text-primary group-hover:dark:text-primary-light">Powered by Lucidworks Agent Studio</Link>
      </Card>
    </div>;
};

[old doc.lw link]: https//doc.lucidworks.com/fusion/5.9/kslobm

[localhost link]: http://localhost:3000/docs/5/fusion/operations/config-sync/objects/blobs

[mintlify link]: https://doc.lucidworks.com/docs/5/fusion/operations/config-sync/objects/blobs

When you add a blob to the [blob store](/docs/5/fusion/getting-data-in/blob-storage) in Fusion, extra information is needed:

* **Resource type**: This tells Fusion what kind of file or data you’re adding.
* **Content type**: This is about the file format, such as JPEG, JavaScript, and so on.\
  You can find more about these types in the [Blob Store API](/api-reference/blobs/get-blob-store-service-status).

<LwTemplate />

## How ConfigSync handles blob metadata

ConfigSync handles this extra information with a special `.metadata` file.
This file has the same name as your blob but is stored in a different location.

For example, if your blob’s path is `app/blobs/some-folder/blob.txt`, then your metadata file’s path should be `APP/.metadata/blobs/FOLDER_NAME/blob.txt`.

## Metadata file structure

This `.metadata` file is a JSON file that looks like this:

```json wrap  theme={"dark"}
{
  "contentType": "text/javascript",
  "resourceType": "file:js-index"
}
```

### Rules for using meta-files

* You only need to include the metadata file when adding new blobs.\
  Existing blobs should already have metadata files.
* If you ever need to change the `resourceType` or `contentType` of a blob, update and commit the meta-file.\
  No need to re-upload the blob unless it has also changed.

### Metadata for system blobs

The `_lw_system` folder stores custom connectors or JDBC drivers which do not require separate metadata files.