Run as an app

The marimo CLI lets you run any notebook as an app: marimo run lays out the notebook as an app and starts a web server that hosts the resulting app.

By default, apps are laid out as a concetentation of their outputs, with code hidden. You can customize the layout using marimo’s built-in drag-and-drop grid editor; you can also choose to include code in the app view.


Usage: marimo run [OPTIONS] NAME

  Run a notebook as an app in read-only mode.

  If NAME is a url, the notebook will be downloaded to a temporary file.


      * marimo run

  -p, --port INTEGER  Port to attach to.
  --host TEXT         Host to attach to.
  --headless          Don't launch a browser.
  --include-code      Include notebook code in the app.
  --base-url TEXT     Base URL for the server. Should start with a /.
  --help              Show this message and exit.


While editing a notebook with marimo edit, you can preview the notebook as an app by clicking the preview button in the bottom-left of the editor. (You can also use the command palette.)

Vertical layout

The default layout is the vertical layout: cell outputs are concatenated vertically and code is hidden. When combined with marimo’s built-in functions for laying out outputs, as well as its configurable app widths (configure via the notebook settings menu), the vertical layout can successfully support a wide breadth of application user interfaces.

Grid layout

If you prefer a drag-and-drop experience over programmatic layout, consider using marimo’s grid editor for making your apps: with this editor, you simply drag outputs onto a grid to arrange them on the page.

Enable the grid editor in the app preview, via a dropdown:

Grid layout lets you drag and drop outputs to construct your app

marimo saves metadata about your constructed layout in a layouts folder; make sure to include this folder when sharing your notebook so that others can reconstruct your layout.