diff --git a/client/css/post-content-control.styl b/client/css/post-content-control.styl
index 37538f82..d2911748 100644
--- a/client/css/post-content-control.styl
+++ b/client/css/post-content-control.styl
@@ -1,14 +1,16 @@
 @import colors
 
 .post-container
-    .post-content.transparency-grid img
-        background-image:
-            linear-gradient(45deg, $transparency-grid-square-color 25%, transparent 25%),
-            linear-gradient(-45deg, $transparency-grid-square-color 25%, transparent 25%),
-            linear-gradient(45deg, transparent 75%, $transparency-grid-square-color 75%),
-            linear-gradient(-45deg, transparent 75%, $transparency-grid-square-color 75%)
-        background-size: 20px 20px
-        background-position: 0 0, 0 10px, 10px -10px, -10px 0px
+    .post-content
+        &.transparency-grid, &.post-error
+            background-image:
+                linear-gradient(45deg, $transparency-grid-square-color 25%, transparent 25%),
+                linear-gradient(-45deg, $transparency-grid-square-color 25%, transparent 25%),
+                linear-gradient(45deg, transparent 75%, $transparency-grid-square-color 75%),
+                linear-gradient(-45deg, transparent 75%, $transparency-grid-square-color 75%)
+            background-position: 0 0, 0 10px, 10px -10px, -10px 0px
+            background-repeat: repeat
+            background-size: 20px 20px
 
     text-align: center
     .post-content
@@ -17,6 +19,8 @@
         position: relative
 
         .resize-listener
+            background-repeat: no-repeat
+            background-size: cover
             position: absolute
             left: 0
             right: 0
@@ -27,3 +31,14 @@
 
         img
             image-orientation: from-image
+
+.darktheme .post-container .post-content
+    &.transparency-grid, &.post-error
+        background-image:
+            linear-gradient(45deg, $transparency-grid-square-color 25%, transparent 25%),
+            linear-gradient(-45deg, $transparency-grid-square-color 25%, transparent 25%),
+            linear-gradient(45deg, transparent 75%, $transparency-grid-square-color 75%),
+            linear-gradient(-45deg, transparent 75%, $transparency-grid-square-color 75%)
+        background-position: 0 0, 0 10px, 10px -10px, -10px 0px
+        background-repeat: repeat
+        background-size: 20px 20px
diff --git a/client/js/controls/post_content_control.js b/client/js/controls/post_content_control.js
index aca907b0..622c530d 100644
--- a/client/js/controls/post_content_control.js
+++ b/client/js/controls/post_content_control.js
@@ -119,20 +119,28 @@ class PostContentControl {
             post: this._post,
             autoplay: settings.get().autoplayVideos,
         });
+        function load(argument) {
+            if (settings.get().transparencyGrid) {
+                newNode.classList.add("transparency-grid");
+            }
+            newNode.firstElementChild.style.backgroundImage = "";
+        }
         if (["image", "flash"].includes(this._post.type)) {
-            newNode.style.backgroundImage = "url("+this._post.thumbnailUrl+")";
+            newNode.firstElementChild.style.backgroundImage = "url("+this._post.thumbnailUrl+")";
         }
         if (this._post.type == "image") {
-            newNode.firstElementChild.addEventListener("load", (e) => {
-                if (settings.get().transparencyGrid) {
-                    newNode.classList.add("transparency-grid");
-                } else {
-                    newNode.style.backgroundImage = "";
-                }
-            });
+            newNode.firstElementChild.addEventListener("load", load);
         } else if (settings.get().transparencyGrid) {
             newNode.classList.add("transparency-grid");
         }
+        newNode.firstElementChild.addEventListener("error", (e) => {
+            newNode.classList.add("post-error");
+            if (["image", "animation"].includes(this._post.type)) {
+                newNode.firstElementChild.removeEventListener("load", load);
+                newNode.firstElementChild.style.backgroundImage = "url("+this._post.thumbnailUrl+")";
+                newNode.firstElementChild.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";
+            }
+        });
         if (this._postContentNode) {
             this._hostNode.replaceChild(newNode, this._postContentNode);
         } else {