diff --git a/src/renderview.js b/src/renderview.js
index 61b2808..c90e18e 100644
--- a/src/renderview.js
+++ b/src/renderview.js
@@ -394,7 +394,7 @@ class BaseRenderView {
       if (isVisible !== this._isVisible) {
         this._isVisible = isVisible
         const event = {
-          event_type: isVisible ? 'show' : 'hide',
+          type: isVisible ? 'show' : 'hide',
           t: getTimestamp()
         }
         this.onEvent(event)
@@ -456,12 +456,12 @@ class BaseRenderView {
       this._lsize = [logicalWidth, logicalHeight]
 
       const event = {
-        event_type: 'resize',
+        type: 'resize',
         width: logicalWidth,
         height: logicalHeight,
         pwidth: physicalWidth,
         pheight: physicalHeight,
-        pixel_ratio: ratio,
+        pixelratio: ratio,
         timestamp: getTimestamp()
       }
       this.onEvent(event)
@@ -501,7 +501,7 @@ class BaseRenderView {
       lastButtons = buttons
 
       const event = {
-        event_type: 'pointer_down',
+        type: 'pointer_down',
         x: ev.offsetX,
         y: ev.offsetY,
         button,
@@ -552,7 +552,7 @@ class BaseRenderView {
         pendingMoveEvent.y = ev.offsetY
       } else {
         const event = {
-          event_type: 'pointer_move',
+          type: 'pointer_move',
           x: ev.offsetX,
           y: ev.offsetY,
           button,
@@ -587,7 +587,7 @@ class BaseRenderView {
       lastButtons = buttons
 
       const event = {
-        event_type: 'pointer_up',
+        type: 'pointer_up',
         x: ev.offsetX,
         y: ev.offsetY,
         button,
@@ -616,7 +616,7 @@ class BaseRenderView {
       button = 0
 
       const event = {
-        event_type: 'pointer_enter',
+        type: 'pointer_enter',
         x: ev.offsetX,
         y: ev.offsetY,
         button,
@@ -645,7 +645,7 @@ class BaseRenderView {
       button = 0
 
       const event = {
-        event_type: 'pointer_leave',
+        type: 'pointer_leave',
         x: ev.offsetX,
         y: ev.offsetY,
         button,
@@ -675,7 +675,7 @@ class BaseRenderView {
       const modifiers = getModifiers(ev)
 
       const event = {
-        event_type: 'double_click',
+        type: 'double_click',
         x: ev.offsetX,
         y: ev.offsetY,
         button,
@@ -729,7 +729,7 @@ class BaseRenderView {
         pendingWheelEvent.dy += ev.deltaY * scale
       } else {
         const event = {
-          event_type: 'wheel',
+          type: 'wheel',
           x: ev.offsetX,
           y: ev.offsetY,
           dx: ev.deltaX * scale,
@@ -766,7 +766,7 @@ class BaseRenderView {
       const modifiers = getModifiers(ev)
 
       const event = {
-        event_type: 'key_down',
+        type: 'key_down',
         key: KEY_MAP[ev.key] || ev.key,
         modifiers,
         timestamp: getTimestamp()
@@ -784,7 +784,7 @@ class BaseRenderView {
       const modifiers = getModifiers(ev)
 
       const event = {
-        event_type: 'key_up',
+        type: 'key_up',
         key: KEY_MAP[ev.key] || ev.key,
         modifiers,
         timestamp: getTimestamp()
@@ -805,7 +805,7 @@ class BaseRenderView {
       }
 
       const event = {
-        event_type: 'char',
+        type: 'char',
         data: ev.data,
         is_composing: ev.isComposing,
         input_type: ev.inputType,
diff --git a/src/spec.md b/src/spec.md
index e014db7..52ad3ef 100644
--- a/src/spec.md
+++ b/src/spec.md
@@ -65,12 +65,12 @@ This event is emitted when the canvas changes size.
 
 Fields:
 
-* `event_type`: 'resize'
+* `type`: 'resize'
 * `width`: The width in logical pixels.
 * `height`: The height in logical pixels.
 * `pwidth`: The width in physical pixels.
 * `pheight`: The height in physical pixels.
-* `pixel_ratio`: The pixel ratio between logical and physical pixels.
+* `pixelratio`: The pixel ratio between logical and physical pixels.
 * `timestamp`: A timestamp in seconds.
 
 
@@ -80,7 +80,7 @@ This event is emitted when the canvas is closed (i.e. destroyed).
 
 Fields:
 
-* `event_type`: 'close'
+* `type`: 'close'
 * `timestamp`: A timestamp in seconds.
 
 
@@ -92,7 +92,7 @@ shown. If this is not the case, the implementation should emit a 'hide' event.
 
 Fields:
 
-* `event_type`: 'show'
+* `type`: 'show'
 * `timestamp`: A timestamp in seconds.
 
 
@@ -102,7 +102,7 @@ This event is emitted when the canvas is hidden. It can e.g. be minimized or scr
 
 Fields:
 
-* `event_type`: 'hide'
+* `type`: 'hide'
 * `timestamp`: A timestamp in seconds.
 
 
@@ -112,7 +112,7 @@ This event is emitted when the user interacts with mouse, touch or other pointer
 
 Fields:
 
-* `event_type`: 'pointer_down'
+* `type`: 'pointer_down'
 * `x`: The horizontal position of the pointer within the canvas.
 * `y`: The vertical position of the pointer within the canvas.
 * `button`: The button to which this event applies.
@@ -139,7 +139,7 @@ This event is emitted when the user releases a pointer.
 
 Fields:
 
-* `event_type`: 'pointer_up'
+* `type`: 'pointer_up'
 * ... the other fields are the same as the pointer_down event.
 
 
@@ -151,7 +151,7 @@ In remote contexts it is recommended to throttle this event to avoid spamming th
 
 Fields:
 
-* `event_type`: 'pointer_move'
+* `type`: 'pointer_move'
 * ... the other fields are the same as the pointer_down event.
 
 
@@ -161,7 +161,7 @@ This event is emitted when the user moves a pointer into the boundary of the can
 
 Fields:
 
-* `event_type`: 'pointer_enter'
+* `type`: 'pointer_enter'
 * `timestamp`: A timestamp in seconds.
 
 
@@ -171,7 +171,7 @@ This event is emitted when the user moves a pointer out of the boundary of the c
 
 Fields:
 
-* `event_type`: 'pointer_enter'
+* `type`: 'pointer_enter'
 * `timestamp`: A timestamp in seconds.
 
 
@@ -181,7 +181,7 @@ This event is emitted on a double-click.
 
 Fields:
 
-* `event_type`: 'pointer_down'
+* `type`: 'pointer_down'
 * `x`: The horizontal position of the pointer within the canvas.
 * `y`: The vertical position of the pointer within the canvas.
 * `button`: The button to which this event applies.
@@ -198,7 +198,7 @@ In remote contexts it is recommended to throttle this event to avoid spamming th
 
 Fields:
 
-* `event_type`: 'wheel'
+* `type`: 'wheel'
 * `dx`: The horizontal scroll delta (positive means scroll right).
 * `dy`: The vertical scroll delta (positive means scroll down or zoom out).
 * `x`: The mouse horizontal position during the scroll.
@@ -227,7 +227,7 @@ This event is emitted when a key is pressed down.
 
 Fields:
 
-* `event_type`: 'key_down'
+* `type`: 'key_down'
 * `key`: The key being pressed as a string.
 * `modifiers`: A tuple of modifier keys being pressed down.
 * `timestamp`: A timestamp in seconds.
@@ -244,7 +244,7 @@ The key names follow the [browser spec](https://developer.mozilla.org/en-US/docs
 
 This event is emitted when a key is released.
 
-* `event_type`: 'key_up'
+* `type`: 'key_up'
 * `key`: The key being released as a string.
 * `modifiers`: A tuple of modifier keys being pressed down.
 * `timestamp`: A timestamp in seconds.
diff --git a/src/tester.html b/src/tester.html
index 7e940ad..4feaa22 100644
--- a/src/tester.html
+++ b/src/tester.html
@@ -31,14 +31,14 @@
                 const events = this._events
                 this._eventCount += 1
 
-                if (events.length > 0 && events[0].event_type == event.event_type) {
+                if (events.length > 0 && events[0].type == event.type) {
                     events[0] = event
                 } else {
                     events.unshift(event)
                     this._events = this._events.slice(0, 32)
                 }
 
-                if (event.event_type == 'resize') {
+                if (event.type == 'resize') {
                     this.viewElement.width = event.pwidth
                     this.viewElement.height = event.pheight
                 }