diff --git a/client/css/post-main-view.styl b/client/css/post-main-view.styl
index 1183cce2..61d30ca0 100644
--- a/client/css/post-main-view.styl
+++ b/client/css/post-main-view.styl
@@ -45,6 +45,8 @@
 
         .post-content
             margin: 0
+            background-size: cover
+            background-repeat: no-repeat
 
     .after-mobile-controls
         width: 100%
diff --git a/client/html/index.htm b/client/html/index.htm
index 2f0f4e40..58cef992 100644
--- a/client/html/index.htm
+++ b/client/html/index.htm
@@ -28,5 +28,6 @@
     <div id='content-holder'></div>
     <script type='text/javascript' src='js/vendor.min.js'></script>
     <script type='text/javascript' src='js/app.min.js'></script>
+    <script type='text/javascript' src='https://unpkg.com/@ruffle-rs/ruffle' async></script>
 </body>
 </html>
diff --git a/client/html/post_content.tpl b/client/html/post_content.tpl
index fd5b094c..aaecdf24 100644
--- a/client/html/post_content.tpl
+++ b/client/html/post_content.tpl
@@ -1,4 +1,4 @@
-<div class='post-content post-type-<%- ctx.post.type %>'>
+<div class='post-content post-type-<%- ctx.post.type %>' style='<%- ctx.post.type === 'flash' ? 'background-image: url('+ctx.post.thumbnailUrl+')' : '' %>'>
     <% if (['image', 'animation'].includes(ctx.post.type)) { %>
 
         <img class='resize-listener' alt='' src='<%- ctx.post.contentUrl %>'/>
@@ -6,8 +6,9 @@
     <% } else if (ctx.post.type === 'flash') { %>
 
         <object class='resize-listener' width='<%- ctx.post.canvasWidth %>' height='<%- ctx.post.canvasHeight %>' data='<%- ctx.post.contentUrl %>'>
-            <param name='wmode' value='opaque'/>
+            <param name='wmode' value='transparent'/>
             <param name='movie' value='<%- ctx.post.contentUrl %>'/>
+            <div class='messages'><div class='message-wrapper'><div class='message error'>Your browser does not support Flash.</div></div></div>
         </object>
 
     <% } else if (ctx.post.type === 'video') { %>
diff --git a/client/js/main.js b/client/js/main.js
index c5bdc537..aaa41ee2 100644
--- a/client/js/main.js
+++ b/client/js/main.js
@@ -42,6 +42,17 @@ const pools = require("./pools.js");
 const api = require("./api.js");
 const settings = require("./models/settings.js");
 
+const rgb2hex = (rgb) => `#${rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/).slice(1).map(n => parseInt(n, 10).toString(16).padStart(2, '0')).join('')}`
+
+window.RufflePlayer = window.RufflePlayer || {};
+window.RufflePlayer.config = {
+    "polyfills": true,
+    "autoplay": "off",
+    "warnOnUnsupportedContent": false,
+    "showSwfDownload": true,
+    "splashScreen": false,
+};
+
 Promise.resolve()
     .then(() => api.fetchConfig())
     .then(
@@ -99,6 +110,8 @@ Promise.resolve()
         if (settings.get().darkTheme) {
             document.body.classList.add("darktheme");
         }
+
+        window.RufflePlayer.config.autoplay = settings.get().autoplayVideos ? "auto" : "off"
     })
     .then(() => api.loginFromCookies())
     .then(
diff --git a/client/js/views/settings_view.js b/client/js/views/settings_view.js
index b7f69d55..0a4e34dc 100644
--- a/client/js/views/settings_view.js
+++ b/client/js/views/settings_view.js
@@ -30,6 +30,7 @@ class SettingsView extends events.EventTarget {
 
     _evtSubmit(e) {
         e.preventDefault();
+        window.RufflePlayer.config.autoplay = this._find("autoplay-videos").checked ? "auto" : "off"
         this.dispatchEvent(
             new CustomEvent("submit", {
                 detail: {
diff --git a/server/szurubooru/func/images.py b/server/szurubooru/func/images.py
index e135d182..602f3bd0 100644
--- a/server/szurubooru/func/images.py
+++ b/server/szurubooru/func/images.py
@@ -28,6 +28,9 @@ class Image:
     def __init__(self, content: bytes) -> None:
         self.content = content
         self._reload_info()
+        if self.info["format"]["format_name"] == "swf":
+            self.content = self.swf_to_png()
+            self._reload_info()
 
     @property
     def width(self) -> int:
@@ -60,10 +63,7 @@ class Image:
             "png",
             "-",
         ]
-        if (
-            "duration" in self.info["format"]
-            and self.info["format"]["format_name"] != "swf"
-        ):
+        if "duration" in self.info["format"]:
             duration = float(self.info["format"]["duration"])
             if duration > 3:
                 cli = [
@@ -76,6 +76,19 @@ class Image:
         self.content = content
         self._reload_info()
 
+    def swf_to_png(self) -> bytes:
+        return self._execute(
+            [
+                "--silent",
+                "-g",
+                "gl",
+                "--",
+                "{path}",
+                "-",
+            ],
+            program="exporter",
+        )
+
     def to_png(self) -> bytes:
         return self._execute(
             [
@@ -315,7 +328,7 @@ class Image:
         )
         assert "format" in self.info
         assert "streams" in self.info
-        if len(self.info["streams"]) < 1:
+        if len(self.info["streams"]) < 1 and self.info["format"]["format_name"] != "swf":
             logger.warning("The video contains no video streams.")
             raise errors.ProcessingError(
                 "The video contains no video streams."