diff --git a/browser_tests/fixtures/ComfyPage.ts b/browser_tests/fixtures/ComfyPage.ts
index dbc06b999..72445087f 100644
--- a/browser_tests/fixtures/ComfyPage.ts
+++ b/browser_tests/fixtures/ComfyPage.ts
@@ -563,6 +563,7 @@ export class ComfyPage {
         if (fileName.endsWith('.webm')) return 'video/webm'
         if (fileName.endsWith('.json')) return 'application/json'
         if (fileName.endsWith('.glb')) return 'model/gltf-binary'
+        if (fileName.endsWith('.avif')) return 'image/avif'
         return 'application/octet-stream'
       }
 
diff --git a/browser_tests/tests/loadWorkflowInMedia.spec.ts-snapshots/workflow-avif-chromium-linux.png b/browser_tests/tests/loadWorkflowInMedia.spec.ts-snapshots/workflow-avif-chromium-linux.png
new file mode 100644
index 000000000..a1bd701ca
Binary files /dev/null and b/browser_tests/tests/loadWorkflowInMedia.spec.ts-snapshots/workflow-avif-chromium-linux.png differ