diff --git a/ifcurl/service.py b/ifcurl/service.py
index 70fccb2..500cf5f 100644
--- a/ifcurl/service.py
+++ b/ifcurl/service.py
@@ -184,9 +184,19 @@ class PreviewRequest(BaseModel):
 
 
 # ---------------------------------------------------------------------------
-# Endpoint
+# Endpoints
 # ---------------------------------------------------------------------------
 
+@app.get("/preview")
+def preview_get(url: str) -> Response:
+    """GET variant of POST /preview for use in HTML ``<img src>`` tags.
+
+    The ``url`` query parameter is the ifc:// URL to render.  All caching
+    and authentication behaviour is identical to the POST endpoint.
+    """
+    return preview(PreviewRequest(url=url))
+
+
 @app.post("/preview")
 def preview(request: PreviewRequest) -> Response:
     """Render an ifc:// URL to a PNG image.