---
title: "Feature: #83476 - Load merged JS files asynchronous"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:feature-83476"
source: "Changelog/9.4/Feature-83476-LoadMergedJSFilesAsynchronous.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Feature: #83476 - Load merged JS files asynchronous

See [forge#83476](https://forge.typo3.org/issues/83476)

## Description

The async attribute is now assigned to the script tag of the concatenated JS files if all files have the async attribute enabled in TypoScript.

### Example:

```typoscript
config.concatenateJs = 1

page = PAGE
page.includeJSFooter {
    test = fileadmin/user_upload/test.js
    test.async = 1

    test2 = fileadmin/user_upload/test2.js
    test2.async = 1
}
```