diff --git a/README.md b/README.md
index 55d71e8..5560043 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,35 @@ Preview and edit files (New!)
 
 Image gallery (New!)
 
+## Sponsors
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="middle">
+        <a href="https://www.linkpreview.net/?utm_campaign=Sponsored%20GitHub%20FileGator" target="_blank">
+          <img title="Preview Web Links with our Free API service. Get JSON Response for any URL" width="177px" src="https://www.linkpreview.net/images/logo-dark.png">
+        </a>
+      </td>
+      <td align="center" valign="middle">
+        <a href="https://www.getping.info/?utm_campaign=Sponsored%20GitHub%20FileGator" target="_blank">
+          <img title="Trigger an email notification with a simple GET request" width="177px" src="https://www.getping.info/images/logo.png">
+        </a>
+      </td>
+      <td align="center" valign="middle">
+        <a href="https://www.ticksel.com/?utm_campaign=Sponsored%20GitHub%20FileGator" target="_blank">
+          <img title="Friendly website analytics made for humans" width="177px" src="https://interactive32.com/images/ticksel.png">
+        </a>
+      </td>
+      <td align="center" valign="middle">
+        <a href="https://interactive32.com/?utm_campaign=Sponsored%20GitHub%20FileGator" target="_blank">
+          <img title="Modern approach to software development" width="177px" src="https://interactive32.com/images/logo.png">
+        </a>
+      </td>
+    </tr><tr></tr>
+  </tbody>
+</table>
+
+
 ## Typical use cases
 - share a folder with colleagues, your team, friends or family
 - give students access to upload their work
diff --git a/backend/Controllers/DownloadController.php b/backend/Controllers/DownloadController.php
index 451c793..85c3339 100644
--- a/backend/Controllers/DownloadController.php
+++ b/backend/Controllers/DownloadController.php
@@ -65,13 +65,21 @@ class DownloadController
             // @codeCoverageIgnoreEnd
         });
 
+        $contentDisposition = HeaderUtils::DISPOSITION_ATTACHMENT;
+        $contentType = 'application/octet-stream';
+
+        if (pathinfo($file['filename'], PATHINFO_EXTENSION) == 'pdf') {
+            $contentDisposition = HeaderUtils::DISPOSITION_INLINE;
+            $contentType = 'application/pdf';
+        }
+
         $streamedResponse->headers->set(
             'Content-Disposition',
-            HeaderUtils::makeDisposition(HeaderUtils::DISPOSITION_ATTACHMENT, $file['filename'], 'file')
+            $contentDisposition
         );
         $streamedResponse->headers->set(
             'Content-Type',
-            'application/octet-stream'
+            $contentType
         );
         $streamedResponse->headers->set(
             'Content-Transfer-Encoding',