--- layout: default title: Backgrounds parent: Theming nav_order: 10 permalink: /theming/backgrounds description: >- Place some background images to give Mainsail its own look with ease. --- # {{ page.title }} {{ page.description }} At the moment there are two background images that can be set. In the sidebar- and mainview. ![screenshot](../assets/img/customizing/sidebar-main.jpg){:width="50%"} For uploads you can use the built-in file manager. `(Settings > Machine)` ## Sidebar background image Just load a background image into your .theme folder and name it `sidebar-background.`. | Filename | sidebar-background | | Valid file extensions | .jpg, .png, .gif and .svg | | Recommended image size | 300x1000px | ## Mainview background image Upload a background image into your .theme folder and name it `main-background.`. | Filename | main-background | | Valid file extensions | .jpg, .png, .gif and .svg | **Please note**: By default, the background image is stretched to the entire area. For example, if you want a repeating pattern, you also need to use custom css. {: .info}