diff --git a/crates/fj-viewer/src/display.rs b/crates/fj-viewer/src/display.rs
index e80754385..b425b2279 100644
--- a/crates/fj-viewer/src/display.rs
+++ b/crates/fj-viewer/src/display.rs
@@ -18,6 +18,9 @@ use crate::{
     window::Window,
 };
 
+/// # Fornjot model viewer
+pub struct Viewer {}
+
 /// # Display the provided mesh in a window that processes input
 pub fn display(tri_mesh: TriMesh, invert_zoom: bool) -> Result<(), Error> {
     let event_loop = EventLoop::new()?;
diff --git a/crates/fj-viewer/src/lib.rs b/crates/fj-viewer/src/lib.rs
index caba1131b..a1eaee2be 100644
--- a/crates/fj-viewer/src/lib.rs
+++ b/crates/fj-viewer/src/lib.rs
@@ -16,6 +16,6 @@ mod input;
 mod window;
 
 pub use self::{
-    display::{Error, display},
+    display::{Error, Viewer, display},
     graphics::RendererInitError,
 };