diff --git a/lib/Controller/LocalController.php b/lib/Controller/LocalController.php
index 9b91131c..e003ff84 100644
--- a/lib/Controller/LocalController.php
+++ b/lib/Controller/LocalController.php
@@ -701,9 +701,10 @@ class LocalController extends Controller {
 			$actor = $this->cacheActorService->getFromId($id);
 			if ($actor->gotIcon()) {
 				$avatar = $actor->getIcon();
-				$document = $this->documentService->getFromCache($avatar->getId());
+				$document = $this->documentService->getFromCache($avatar->getId(), $mime);
 
-				$response = new FileDisplayResponse($document);
+				$response =
+					new FileDisplayResponse($document, Http::STATUS_OK, ['Content-Type' => $mime]);
 				$response->cacheFor(86400);
 
 				return $response;
diff --git a/lib/Controller/NavigationController.php b/lib/Controller/NavigationController.php
index b9b256a0..b613fb1e 100644
--- a/lib/Controller/NavigationController.php
+++ b/lib/Controller/NavigationController.php
@@ -291,9 +291,11 @@ class NavigationController extends Controller {
 	 */
 	public function documentGet(string $id): Response {
 		try {
-			$file = $this->documentService->getFromCache($id);
+			$mime = '';
+			$file = $this->documentService->getFromCache($id, $mime);
+
+			return new FileDisplayResponse($file, Http::STATUS_OK, ['Content-Type' => $mime]);
 
-			return new FileDisplayResponse($file, Http::STATUS_OK);
 		} catch (Exception $e) {
 			return $this->fail($e);
 		}
@@ -311,9 +313,10 @@ class NavigationController extends Controller {
 	public function documentGetPublic(string $id): Response {
 
 		try {
-			$file = $this->documentService->getFromCache($id, true);
+			$mime = '';
+			$file = $this->documentService->getFromCache($id, $mime, true);
 
-			return new FileDisplayResponse($file);
+			return new FileDisplayResponse($file, Http::STATUS_OK, ['Content-Type' => $mime]);
 		} catch (Exception $e) {
 			return $this->fail($e);
 		}
@@ -331,9 +334,10 @@ class NavigationController extends Controller {
 	public function resizedGet(string $id): Response {
 
 		try {
-			$file = $this->documentService->getResizedFromCache($id);
+			$mime = '';
+			$file = $this->documentService->getResizedFromCache($id, $mime);
 
-			return new FileDisplayResponse($file);
+			return new FileDisplayResponse($file, Http::STATUS_OK, ['Content-Type' => $mime]);
 		} catch (Exception $e) {
 			return $this->fail($e);
 		}
@@ -351,12 +355,14 @@ class NavigationController extends Controller {
 	public function resizedGetPublic(string $id): Response {
 
 		try {
-			$file = $this->documentService->getResizedFromCache($id, true);
+			$mime = '';
+			$file = $this->documentService->getResizedFromCache($id, $mime, true);
 
-			return new FileDisplayResponse($file);
+			return new FileDisplayResponse($file, Http::STATUS_OK, ['Content-Type' => $mime]);
 		} catch (Exception $e) {
 			return $this->fail($e);
 		}
 	}
 
 }
+
diff --git a/lib/Service/CacheDocumentService.php b/lib/Service/CacheDocumentService.php
index 78505637..b147c8f6 100644
--- a/lib/Service/CacheDocumentService.php
+++ b/lib/Service/CacheDocumentService.php
@@ -61,8 +61,8 @@ class CacheDocumentService {
 	use TStringTools;
 
 
-	const RESIZED_HEIGHT = 250;
-	const RESIZED_WIDTH = 350;
+	const RESIZED_WIDTH = 280;
+	const RESIZED_HEIGHT = 180;
 
 	/** @var IAppData */
 	private $appData;
diff --git a/lib/Service/DocumentService.php b/lib/Service/DocumentService.php
index d9630955..c5318bc3 100644
--- a/lib/Service/DocumentService.php
+++ b/lib/Service/DocumentService.php
@@ -190,6 +190,7 @@ class DocumentService {
 
 	/**
 	 * @param string $id
+	 * @param string $mime
 	 * @param bool $public
 	 *
 	 * @return ISimpleFile
@@ -199,8 +200,9 @@ class DocumentService {
 	 * @throws RequestResultNotJsonException
 	 * @throws SocialAppConfigException
 	 */
-	public function getResizedFromCache(string $id, bool $public = false) {
+	public function getResizedFromCache(string $id, string &$mime = '', bool $public = false) {
 		$document = $this->cacheRemoteDocument($id, $public);
+		$mime = $document->getMimeType();
 
 		return $this->cacheService->getContentFromCache($document->getResizedCopy());
 	}
@@ -218,7 +220,7 @@ class DocumentService {
 	 * @throws RequestResultNotJsonException
 	 * @throws SocialAppConfigException
 	 */
-	public function getFromCache(string $id, bool $public = false, string &$mimeType = '') {
+	public function getFromCache(string $id, string &$mimeType = '', bool $public = false) {
 		$document = $this->cacheRemoteDocument($id, $public);
 		$mimeType = $document->getMimeType();