diff --git a/app/javascript/src/javascripts/blacklists.js b/app/javascript/src/javascripts/blacklists.js
index c9e3c6e1b..790cc4c31 100644
--- a/app/javascript/src/javascripts/blacklists.js
+++ b/app/javascript/src/javascripts/blacklists.js
@@ -15,8 +15,7 @@ Blacklist.parse_entry = function(string) {
     "hits": 0,
     "min_score": null
   };
-  var matches = string.match(/\S+/g) || [];
-  $.each(matches, function(i, tag) {
+  Utility.regexp_split(string).forEach(function(tag) {
     if (tag.charAt(0) === '-') {
       entry.exclude.push(tag.slice(1));
     } else if (tag.charAt(0) === '~') {
@@ -35,23 +34,24 @@ Blacklist.parse_entries = function() {
   var entries = (Utility.meta("blacklisted-tags") || "nozomiisthebestlovelive").replace(/(rating:[qes])\w+/ig, "$1").toLowerCase().split(/,/);
   entries = entries.filter(e => e.trim() !== "");
 
-  $.each(entries, function(i, tags) {
+  entries.forEach(function(tags) {
     var entry = Blacklist.parse_entry(tags);
     Blacklist.entries.push(entry);
   });
 }
 
 Blacklist.toggle_entry = function(e) {
-  var tags = $(e.target).text();
+  var $link = $(e.target);
+  var tags = $link.text();
   var match = $.grep(Blacklist.entries, function(entry, i) {
     return entry.tags === tags;
   })[0];
   if (match) {
     match.disabled = !match.disabled;
     if (match.disabled) {
-      Blacklist.post_hide(e.target);
+      $link.addClass("blacklisted-inactive");
     } else {
-      Blacklist.post_unhide(e.target);
+      $link.removeClass("blacklisted-inactive");
     }
   }
   Blacklist.apply();
@@ -59,7 +59,7 @@ Blacklist.toggle_entry = function(e) {
 }
 
 Blacklist.update_sidebar = function() {
-  $.each(this.entries, function(i, entry) {
+  Blacklist.entries.forEach(function(entry) {
     if (entry.hits === 0) {
       return;
     }
@@ -84,58 +84,78 @@ Blacklist.update_sidebar = function() {
   $("#blacklist-box").show();
 }
 
+Blacklist.disable_all = function() {
+  Blacklist.entries.forEach(function(entry) {
+    entry.disabled = true;
+  });
+  // There is no need to process the blacklist when disabling
+  Blacklist.posts().removeClass("blacklisted-active");
+  $("#disable-all-blacklists").hide();
+  $("#re-enable-all-blacklists").show();
+  $("#blacklist-list a").addClass("blacklisted-inactive");
+}
+
+Blacklist.enable_all = function() {
+  Blacklist.entries.forEach(function(entry) {
+    entry.disabled = false;
+  });
+  Blacklist.apply();
+  $("#disable-all-blacklists").show();
+  $("#re-enable-all-blacklists").hide();
+  $("#blacklist-list a").removeClass("blacklisted-inactive");
+}
+
 Blacklist.initialize_disable_all_blacklists = function() {
   if (Cookie.get("dab") === "1") {
-    $("#re-enable-all-blacklists").show();
-    $("#blacklist-list a:not(.blacklisted-active)").click();
-    Blacklist.apply();
+    Blacklist.disable_all();
   } else {
+    // The blacklist has already been processed by this point
     $("#disable-all-blacklists").show()
   }
 
   $("#disable-all-blacklists").on("click.danbooru", function(e) {
-    $("#disable-all-blacklists").hide();
-    $("#re-enable-all-blacklists").show();
     Cookie.put("dab", "1");
-    $("#blacklist-list a:not(.blacklisted-active)").click();
+    Blacklist.disable_all();
     e.preventDefault();
   });
 
   $("#re-enable-all-blacklists").on("click.danbooru", function(e) {
-    $("#disable-all-blacklists").show();
-    $("#re-enable-all-blacklists").hide();
     Cookie.put("dab", "0");
-    $("#blacklist-list a.blacklisted-active").click();
+    Blacklist.enable_all();
     e.preventDefault();
   });
 }
 
 Blacklist.apply = function() {
-  $.each(this.entries, function(i, entry) {
+  Blacklist.entries.forEach(function(entry) {
     entry.hits = 0;
   });
 
   var count = 0
 
-  $.each(this.posts(), function(i, post) {
-    var post_count = 0;
-    $.each(Blacklist.entries, function(j, entry) {
-      if (Blacklist.post_match(post, entry)) {
-        entry.hits += 1;
-        count += 1;
-        post_count += 1;
-      }
-    });
-    if (post_count > 0) {
-      Blacklist.post_hide(post);
-    } else {
-      Blacklist.post_unhide(post);
-    }
+  Blacklist.posts().each(function(i, post) {
+    count += Blacklist.apply_post(post);
   });
 
   return count;
 }
 
+Blacklist.apply_post = function(post) {
+  var post_count = 0;
+  Blacklist.entries.forEach(function(entry) {
+    if (Blacklist.post_match(post, entry)) {
+      entry.hits += 1;
+      post_count += 1;
+    }
+  });
+  if (post_count > 0) {
+    Blacklist.post_hide(post);
+  } else {
+    Blacklist.post_unhide(post);
+  }
+  return post_count;
+};
+
 Blacklist.posts = function() {
   return $(".post-preview, #image-container, #c-comments .post, .mod-queue-preview.post-preview");
 }
@@ -149,11 +169,11 @@ Blacklist.post_match = function(post, entry) {
   var score = parseInt($post.attr("data-score"));
   var score_test = entry.min_score === null || score < entry.min_score;
 
-  var tags = String($post.attr("data-tags")).match(/\S+/g) || [];
-  tags = tags.concat(String($post.attr("data-pools")).match(/\S+/g) || []);
+  var tags = Utility.regexp_split($post.attr("data-tags"));
+  tags.push(...Utility.regexp_split($post.attr("data-pools")));
   tags.push("rating:" + $post.data("rating"));
   tags.push("uploaderid:" + $post.attr("data-uploader-id"));
-  $.each(String($post.data("flags")).match(/\S+/g) || [], function(i, v) {
+  Utility.regexp_split($post.data("flags")).forEach(function(v) {
     tags.push("status:" + v);
   });
 
@@ -164,7 +184,7 @@ Blacklist.post_match = function(post, entry) {
 
 Blacklist.post_hide = function(post) {
   var $post = $(post);
-  $post.addClass("blacklisted").addClass("blacklisted-active");
+  $post.addClass("blacklisted blacklisted-active");
 
   var $video = $post.find("video").get(0);
   if ($video) {
diff --git a/app/javascript/src/javascripts/posts.js.erb b/app/javascript/src/javascripts/posts.js.erb
index 2fda14e7d..2858a2913 100644
--- a/app/javascript/src/javascripts/posts.js.erb
+++ b/app/javascript/src/javascripts/posts.js.erb
@@ -550,8 +550,8 @@ Post.update_tag_count = function(event) {
   let count = 0;
 
   if (event) {
-    let tags = [...new Set($(event.target).val().match(/\S+/g))];
-    if (tags) {
+    let tags = Utility.regexp_split($(event.target).val());
+    if (tags.length) {
       count = tags.length;
       string = (count === 1) ? (count + " tag") : (count + " tags")
     }
diff --git a/app/javascript/src/javascripts/related_tag.js b/app/javascript/src/javascripts/related_tag.js
index f101073a5..3f09339ba 100644
--- a/app/javascript/src/javascripts/related_tag.js
+++ b/app/javascript/src/javascripts/related_tag.js
@@ -89,27 +89,25 @@ RelatedTag.current_tag = function() {
 }
 
 RelatedTag.update_selected = function(e) {
-  var current_tags = $("#upload_tag_string,#post_tag_string").val().toLowerCase().match(/\S+/g) || [];
+  var current_tags = RelatedTag.current_tags();
   var $all_tags = $(".related-tags a.search-tag");
   $all_tags.removeClass("selected");
-
   $all_tags.each(function(i, tag) {
-    if (current_tags.indexOf(tag.textContent.replace(/ /g, "_")) > -1) {
+    if (current_tags.includes(tag.textContent.replace(/ /g, "_"))) {
       $(tag).addClass("selected");
     }
   });
 }
 
-RelatedTag.tags_include = function(name) {
-  var current = $("#upload_tag_string,#post_tag_string").val().toLowerCase().match(/\S+/g) || [];
-  return $.inArray(name.toLowerCase(), current) > -1;
+RelatedTag.current_tags = function() {
+  return Utility.regexp_split($("#upload_tag_string,#post_tag_string").val().toLowerCase());
 }
 
 RelatedTag.toggle_tag = function(e) {
   var $field = $("#upload_tag_string,#post_tag_string");
   var tag = $(e.target).html().replace(/ /g, "_").replace(/&gt;/g, ">").replace(/&lt;/g, "<").replace(/&amp;/g, "&");
 
-  if (RelatedTag.tags_include(tag)) {
+  if (RelatedTag.current_tags().includes(tag)) {
     var escaped_tag = Utility.regexp_escape(tag);
     $field.val($field.val().replace(new RegExp("(^|\\s)" + escaped_tag + "($|\\s)", "gi"), "$1$2"));
   } else {
diff --git a/app/javascript/src/javascripts/utility.js b/app/javascript/src/javascripts/utility.js
index 78811385a..4a335fd50 100644
--- a/app/javascript/src/javascripts/utility.js
+++ b/app/javascript/src/javascripts/utility.js
@@ -108,6 +108,10 @@ Utility.regexp_escape = function(string) {
   return string.replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
 }
 
+Utility.regexp_split = function(string) {
+  return [...new Set(String(string === null || string === undefined ? "" : string).match(/\S+/g))];
+}
+
 $.fn.selectEnd = function() {
   return this.each(function() {
     this.focus();
diff --git a/app/javascript/src/styles/common/blacklists.scss b/app/javascript/src/styles/common/blacklists.scss
index bd4499a4c..b025546c3 100644
--- a/app/javascript/src/styles/common/blacklists.scss
+++ b/app/javascript/src/styles/common/blacklists.scss
@@ -11,7 +11,7 @@
       vertical-align: bottom;
     }
 
-    a.blacklisted-active {
+    a.blacklisted-inactive {
       text-decoration: line-through;
     }
   }
diff --git a/app/views/posts/update.js.erb b/app/views/posts/update.js.erb
index 006499004..1da54c638 100644
--- a/app/views/posts/update.js.erb
+++ b/app/views/posts/update.js.erb
@@ -1,14 +1,16 @@
-var post_id = <%= @post.id %>;
-var $post = $(`#post_${post_id}`);
-
 <% if @post.valid? %>
-  $post.replaceWith("<%= j PostPresenter.preview(@post, show_deleted: true) %>");
+  var $post = $("#post_<%= @post.id %>");
+  <% if !CurrentUser.disable_post_tooltips %>
+    $post.find("img").qtip("destroy", true);
+  <% end %>
+  var $new_post = $("<%= j PostPresenter.preview(@post, show_deleted: true) %>");
+  Danbooru.Blacklist.apply_post($new_post.get(0));
+  $("#post_<%= @post.id %>").replaceWith($new_post);
+  <% if params[:mode] == "quick-edit" %>
+    Danbooru.PostModeMenu.close_edit_form();
+  <% end %>
 <% else %>
-  Danbooru.error(`Post #${post_id}: <%= j @post.errors.full_messages.join("; ") %>`);
-<% end %>
-
-<% if @post.valid? && params[:mode] == "quick-edit" %>
-  Danbooru.PostModeMenu.close_edit_form();
+  Danbooru.error(`Post #<%= @post.id %>: <%= j @post.errors.full_messages.join("; ") %>`);
 <% end %>
 
 $(document).trigger("danbooru:post-preview-updated", <%= raw @post.to_json %>);