diff --git a/package-lock.json b/package-lock.json
index 582609b..3cd23da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10471,6 +10471,11 @@
         }
       }
     },
+    "web-animations-js": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/web-animations-js/-/web-animations-js-2.3.1.tgz",
+      "integrity": "sha1-Om2bwVGWN3qQ+OKAP6UmIWWwRRA="
+    },
     "webauth": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/webauth/-/webauth-1.1.0.tgz",
diff --git a/package.json b/package.json
index 1ae90ff..822957f 100644
--- a/package.json
+++ b/package.json
@@ -66,6 +66,7 @@
     "testcafe": "^0.19.0",
     "timeago.js": "^3.0.2",
     "tiny-queue": "^0.2.1",
+    "web-animations-js": "^2.3.1",
     "webpack": "^4.1.0",
     "webpack-bundle-analyzer": "^2.11.1",
     "workerize-loader": "^1.0.1",
@@ -100,7 +101,8 @@
       "FormData",
       "atob",
       "btoa",
-      "Blob"
+      "Blob",
+      "Element"
     ],
     "ignore": [
       "dist",
diff --git a/routes/_components/IconButton.html b/routes/_components/IconButton.html
index 332b250..dfeeac2 100644
--- a/routes/_components/IconButton.html
+++ b/routes/_components/IconButton.html
@@ -6,7 +6,7 @@
           :disabled
           delegate-key="{{delegateKey}}"
           focus-key="{{focusKey || ''}}" >
-    <svg class="icon-button-svg">
+    <svg class="icon-button-svg" ref:svg>
       <use xlink:href="{{href}}" />
     </svg>
   </button>
@@ -18,7 +18,7 @@
           focus-key="{{focusKey || ''}}"
           :disabled
           on:click >
-    <svg class="icon-button-svg">
+    <svg class="icon-button-svg" ref:svg>
       <use xlink:href="{{href}}" />
     </svg>
   </button>
@@ -50,7 +50,7 @@
   }
 
   .icon-button.pressed .icon-button-svg {
-    fill: var(--action-button-fill-color-pressed)
+    fill: var(--action-button-fill-color-pressed);
   }
 
   .icon-button.pressed:hover .icon-button-svg {
@@ -66,6 +66,16 @@
   import { classname } from '../_utils/classname'
 
   export default {
+    oncreate() {
+      this.observe('animation', animation => {
+        if (!animation) {
+          return
+        }
+        let svg = this.refs.svg
+        let animations = animation.map(({properties, options}) => svg.animate(properties, options))
+        animations.forEach(anim => anim.play())
+      })
+    },
     computed: {
       computedClass: (pressable, pressed, big, className) => {
         return classname(
diff --git a/routes/_components/status/StatusToolbar.html b/routes/_components/status/StatusToolbar.html
index de55b0b..8997826 100644
--- a/routes/_components/status/StatusToolbar.html
+++ b/routes/_components/status/StatusToolbar.html
@@ -13,6 +13,7 @@
     disabled="{{reblogDisabled}}"
     href="{{reblogIcon}}"
     delegateKey="{{reblogKey}}"
+    animation="{{animateReblog && reblogAnimation}}"
   />
   <IconButton
     label="Favorite"
@@ -20,6 +21,7 @@
     pressed="{{favorited}}"
     href="#fa-star"
     delegateKey="{{favoriteKey}}"
+    animation="{{animateFavorite && favoriteAnimation}}"
   />
   <IconButton
     label="Show more options"
@@ -46,6 +48,7 @@
   import { goto } from 'sapper/runtime.js'
   import { importDialogs } from '../../_utils/asyncModules'
   import { updateProfileAndRelationship } from '../../_actions/accounts'
+  import { FAVORITE_ANIMATION, REBLOG_ANIMATION } from '../../_static/animations'
 
   export default {
     oncreate() {
@@ -69,11 +72,13 @@
         let originalStatusId = this.get('originalStatusId')
         let favorited = this.get('favorited')
         /* no await */ setFavorited(originalStatusId, !favorited)
+        this.set({animateFavorite: !favorited})
       },
       onReblogClick() {
         let originalStatusId = this.get('originalStatusId')
         let reblogged = this.get('reblogged')
         /* no await */ setReblogged(originalStatusId, !reblogged)
+        this.set({animateReblog: !reblogged})
       },
       onReplyClick() {
         let originalStatusId = this.get('originalStatusId')
@@ -88,6 +93,10 @@
         dialogs.showStatusOptionsDialog(originalStatusId)
       }
     },
+    data: () => ({
+      favoriteAnimation: FAVORITE_ANIMATION,
+      reblogAnimation: REBLOG_ANIMATION
+    }),
     computed: {
       reblogLabel: (visibility) => {
         switch (visibility) {
diff --git a/routes/_static/animations.js b/routes/_static/animations.js
new file mode 100644
index 0000000..4fb2a80
--- /dev/null
+++ b/routes/_static/animations.js
@@ -0,0 +1,25 @@
+export const FAVORITE_ANIMATION = [
+  {
+    properties: [
+      {transform: 'scale(1)'},
+      {transform: 'scale(2)'},
+      {transform: 'scale(1)'}
+    ],
+    options: {
+      duration: 400,
+      easing: 'ease-in-out'
+    }
+  },
+  {
+    properties: [
+      {fill: 'var(--action-button-fill-color)'},
+      {fill: 'var(--action-button-fill-color-pressed)'}
+    ],
+    options: {
+      duration: 400,
+      easing: 'linear'
+    }
+  }
+]
+
+export const REBLOG_ANIMATION = FAVORITE_ANIMATION
diff --git a/routes/_utils/asyncModules.js b/routes/_utils/asyncModules.js
index e5aae72..4127f09 100644
--- a/routes/_utils/asyncModules.js
+++ b/routes/_utils/asyncModules.js
@@ -14,6 +14,10 @@ export const importIndexedDBGetAllShim = () => import(
   /* webpackChunkName: 'indexeddb-getall-shim' */ 'indexeddb-getall-shim'
   )
 
+export const importWebAnimationPolyfill = () => import(
+  /* webpackChunkName: 'web-animations-js' */ 'web-animations-js'
+  )
+
 export const importWebSocketClient = () => import(
   /* webpackChunkName: '@gamestdio/websocket' */ '@gamestdio/websocket'
   ).then(mod => mod.default)
diff --git a/routes/_utils/loadPolyfills.js b/routes/_utils/loadPolyfills.js
index 6bf27cc..9642c9d 100644
--- a/routes/_utils/loadPolyfills.js
+++ b/routes/_utils/loadPolyfills.js
@@ -1,13 +1,15 @@
 import {
   importIntersectionObserver,
   importRequestIdleCallback,
-  importIndexedDBGetAllShim
+  importIndexedDBGetAllShim,
+  importWebAnimationPolyfill
 } from './asyncModules'
 
 export function loadPolyfills () {
   return Promise.all([
     typeof IntersectionObserver === 'undefined' && importIntersectionObserver(),
     typeof requestIdleCallback === 'undefined' && importRequestIdleCallback(),
-    !IDBObjectStore.prototype.getAll && importIndexedDBGetAllShim()
+    !IDBObjectStore.prototype.getAll && importIndexedDBGetAllShim(),
+    !Element.prototype.animate && importWebAnimationPolyfill()
   ])
 }