diff --git a/src/apiGateway.ts b/src/apiGateway.ts
index 6c69703..fcc6937 100644
--- a/src/apiGateway.ts
+++ b/src/apiGateway.ts
@@ -35,7 +35,12 @@ export function httpRequestToEvent(request: Request): APIGatewayProxyEventV2 {
     );
 
     const bodyString = Buffer.isBuffer(request.body) ? request.body.toString('utf8') : '';
-    const shouldSendBase64 = request.method === 'GET' ? false : bodyString.includes('Content-Disposition: form-data');
+    const shouldSendBase64 = request.method === 'GET'
+        ? false
+        : (
+            bodyString.includes('Content-Disposition: form-data') ||
+            (headers['content-disposition']?.startsWith('inline;') === true)
+        );
 
     const cookies = request.headers.cookie ? request.headers.cookie.split('; ') : [];