src/components/settings_modal/tabs/general_tab.vue

@@ -103,6 +103,18 @@
           <BooleanSetting path="renderMisskeyMarkdown">
             {{ $t('settings.render_mfm') }}
           </BooleanSetting>
+          <ul
+            class="setting-list suboptions"
+          >
+            <li>
+              <BooleanSetting
+                path="renderMfmOnHover"
+                :disabled="!renderMisskeyMarkdown"
+              >
+                {{ $t('settings.render_mfm_on_hover') }}
+              </BooleanSetting>
+            </li>
+          </ul>
         </li>
         <li>
           <BooleanSetting

src/components/status_body/status_body.scss

@@ -204,3 +204,4 @@
     }
   }
 }
+

src/components/status_content/status_content.js

@@ -100,6 +100,9 @@ const StatusContent = {
     maxThumbnails () {
       return this.mergedConfig.maxThumbnails
     },
+    renderMfmOnHover () {
+      return this.mergedConfig.renderMfmOnHover
+    },
     ...mapGetters(['mergedConfig']),
     ...mapState({
       currentUser: state => state.users.currentUser

src/components/status_content/status_content.vue

@@ -1,7 +1,7 @@
 <template>
   <div
     class="StatusContent"
-    :class="{ '-compact': compact }"
+    :class="{ '-compact': compact, 'mfm-hover': renderMfmOnHover }"
   >
     <slot name="header" />
     <StatusBody
@@ -75,6 +75,12 @@
       height: 50px;
     }
   }
+
+  &.mfm-hover:not(:hover) {
+    .mfm {
+      animation: none;
+    }
+  }
 }
 
 .quote-inline,

src/i18n/en.json

@@ -577,6 +577,7 @@
         "remove_alias": "Remove this alias",
         "remove_backup": "Remove",
         "render_mfm": "Render Misskey Markdown",
+        "render_mfm_on_hover": "Pause MFM animations until post hover",
         "replies_in_timeline": "Replies in timeline",
         "reply_visibility_all": "Show all replies",
         "reply_visibility_following": "Only show replies directed at me or users I'm following",

src/modules/config.js

@@ -96,6 +96,7 @@ export const defaultState = {
   sensitiveByDefault: undefined, // instance default
   sensitiveIfSubject: undefined,
   renderMisskeyMarkdown: undefined,
+  renderMfmOnHover: undefined, // instance default
   conversationDisplay: undefined, // instance default
   conversationTreeAdvanced: undefined, // instance default
   conversationOtherRepliesButton: undefined, // instance default

src/modules/instance.js

@@ -57,6 +57,7 @@ const defaultState = {
   sensitiveByDefault: false,
   sensitiveIfSubject: true,
   renderMisskeyMarkdown: false,
+  renderMfmOnHover: false,
   conversationDisplay: 'linear',
   conversationTreeAdvanced: false,
   conversationOtherRepliesButton: 'below',