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# Download a Thumbnail Image

GET https://api.projectmanager.com/api/data/files/{documentId}/thumbnail

Downloads a thumbnail image associated with a document that was previously uploaded to ProjectManager.com.
            
ProjectManager allows you to store files linked to various elements within your Workspace,
such as Projects, Tasks, or your Home. Files are organized based on their storage location.
            
When uploading a file, please allow some time for the file to undergo processing and verification.
ProjectManager may reject file uploads containing issues such as malware. Once a file has
completed the upload process, you can retrieve its associated thumbnail using the DownloadThumbnail API.
            
If successful, this API returns the file contents as an octet-stream (raw bytes).  If an error
occurs, you will receive a JSON result with error information.

Reference: https://developer.projectmanager.com/api-reference/file/download-a-thumbnail-image

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `documentId` (string, required) — The unique identifier of the document for which to download the thumbnail.

### Headers

- `x-integration-name` (string, optional) — The name of the calling system passed along as a header parameter

## Response

### 200

Success

- `string`

## Examples

**Response**

```json
"string"
```

**SDK Code**

```python
import requests

url = "https://api.projectmanager.com/api/data/files/documentId/thumbnail"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.projectmanager.com/api/data/files/documentId/thumbnail';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.projectmanager.com/api/data/files/documentId/thumbnail"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.projectmanager.com/api/data/files/documentId/thumbnail")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.projectmanager.com/api/data/files/documentId/thumbnail")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.projectmanager.com/api/data/files/documentId/thumbnail', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.projectmanager.com/api/data/files/documentId/thumbnail");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.projectmanager.com/api/data/files/documentId/thumbnail")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```