diff --git a/host_vars/musicdolphin.yml b/host_vars/musicdolphin.yml
index 5ea8d94..09f6df4 100644
--- a/host_vars/musicdolphin.yml
+++ b/host_vars/musicdolphin.yml
@@ -18,4 +18,9 @@ mediapi_has_monitor: true
 # Temporarily a debuggable desktop rather than a locked-down kiosk: Openbox root menu,
 # visible pointer, Firefox in a normal window. Set back to "kiosk" when done.
 pi_kiosk_mode: debug
+# ?pi=1 is the front-end's Raspberry Pi profile (web/src/lib/lowPower.ts): the ambient
+# canvas at a quarter of the pixels and 30fps, the progress bar re-rendering ten times
+# a second instead of sixty, and no backdrop blur. Drop the parameter in the address
+# bar to compare against the full-fat version on the same machine.
+pi_kiosk_url: "http://localhost:8080/?pi=1"
 musicmouse_version: deploy/musicdolphin