diff --git a/src/renderview.js b/src/renderview.js
index c90e18e..ee21f26 100644
--- a/src/renderview.js
+++ b/src/renderview.js
@@ -177,6 +177,11 @@ class BaseRenderView {
       this.wrapperElement.innerHTML = ''
       this.wrapperElement = null
     }
+    const event = {
+      type: 'close',
+      timestamp: getTimestamp()
+    }
+    this.onEvent(event)
   }
 
   /**
@@ -395,7 +400,7 @@ class BaseRenderView {
         this._isVisible = isVisible
         const event = {
           type: isVisible ? 'show' : 'hide',
-          t: getTimestamp()
+          timestamp: getTimestamp()
         }
         this.onEvent(event)
       }
@@ -461,7 +466,7 @@ class BaseRenderView {
         height: logicalHeight,
         pwidth: physicalWidth,
         pheight: physicalHeight,
-        pixelratio: ratio,
+        ratio,
         timestamp: getTimestamp()
       }
       this.onEvent(event)
diff --git a/src/spec.md b/src/spec.md
index 52ad3ef..c26f7d3 100644
--- a/src/spec.md
+++ b/src/spec.md
@@ -3,7 +3,7 @@
 
 A protocol for interactive rendering surfaces.
 
-*Last update: 18-03-2026*
+*Last update: 19-03-2026*
 
 *This spec was previously known as the jupyter_rfb event spec, but was rolled into a separate project.*
 
@@ -70,7 +70,7 @@ Fields:
 * `height`: The height in logical pixels.
 * `pwidth`: The width in physical pixels.
 * `pheight`: The height in physical pixels.
-* `pixelratio`: The pixel ratio between logical and physical pixels.
+* `ratio`: The pixel ratio between logical and physical pixels.
 * `timestamp`: A timestamp in seconds.