> For the complete documentation index, see [llms.txt](https://progressively.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://progressively.gitbook.io/docs/developpers/customization.md).

# Customization

You can customize some aspects of Progressively to your needs using environment variables.

Keep in mind that **certain features require both the backend and frontend `.env` files to be modified.**

{% content-ref url="/pages/Ag8EKmIZp9QLzijy4WJt" %}
[Backend environment variables](/docs/developpers/customization/backend-environment-variables.md)
{% endcontent-ref %}

{% content-ref url="/pages/daKModfPqEzXB8IdWx4R" %}
[Frontend environment variables](/docs/developpers/customization/frontend-environment-variables.md)
{% endcontent-ref %}