# Config Folder Files

In the process extension develpoment, you will find a config folder. It contains three important files, each of these files has different work.

**Autoload file:-** This loads the **CSS/JS/Helper** dependencies into extension.

{% content-ref url="config-folder-files/autoload-file" %}
[autoload-file](https://docs.minical.io/build-an-extension/config-folder-files/autoload-file)
{% endcontent-ref %}

**Config file:-** This loads the **config** details of the extension.

{% content-ref url="config-folder-files/config-file" %}
[config-file](https://docs.minical.io/build-an-extension/config-folder-files/config-file)
{% endcontent-ref %}

**Route file:-** This manages the **route** of the extension.

{% content-ref url="config-folder-files/route-file" %}
[route-file](https://docs.minical.io/build-an-extension/config-folder-files/route-file)
{% endcontent-ref %}