diff --git a/src/Jackett.Common/Content/custom.css b/src/Jackett.Common/Content/custom.css
index 936f57f49..3548a01d6 100644
--- a/src/Jackett.Common/Content/custom.css
+++ b/src/Jackett.Common/Content/custom.css
@@ -309,6 +309,10 @@ table td.fit{
     background-color: #86cca8;
 }
 
+.label-douban {
+    background-color: #86cc10;
+}
+
 .tooltip {
     pointer-events: none;
 }
diff --git a/src/Jackett.Common/Content/custom.js b/src/Jackett.Common/Content/custom.js
index 7d16d42a5..7eee1c698 100644
--- a/src/Jackett.Common/Content/custom.js
+++ b/src/Jackett.Common/Content/custom.js
@@ -973,6 +973,7 @@ function updateReleasesRow(row) {
     var IMDBId = $(row).data("imdb");
     var TMDBId = $(row).data("tmdb");
     var TVDBId = $(row).data("tvdb");
+    var DoubanId = $(row).data("douban");
     var Poster = $(row).data("poster");
     var Description = $(row).data("description");
     var DownloadVolumeFactor = parseFloat($(row).find("td.DownloadVolumeFactor").html());
@@ -1010,6 +1011,10 @@ function updateReleasesRow(row) {
       labels.append('\n<a href="https://thetvdb.com/?tab=series&id=' + TVDBId + '" target="_blank" class="label label-tvdb" alt="TVDB" title="TVDB">TVDB</a>');
     }
 
+    if (DoubanId && DoubanId > 0) {
+      labels.append('\n<a href="https://movie.douban.com/subject/' + DoubanId + '" target="_blank" class="label label-douban" alt="Douban" title="Douban">Douban</a>');
+    }
+
     if (!isNaN(DownloadVolumeFactor)) {
         if (DownloadVolumeFactor == 0) {
             labels.append('\n<span class="label label-success">FREELEECH</span>');
diff --git a/src/Jackett.Common/Content/custom_mobile.css b/src/Jackett.Common/Content/custom_mobile.css
index 44bd803c8..1640a9793 100644
--- a/src/Jackett.Common/Content/custom_mobile.css
+++ b/src/Jackett.Common/Content/custom_mobile.css
@@ -292,6 +292,10 @@ table td.fit{
     background-color: #86cca8;
 }
 
+.label-douban {
+    background-color: #86cc10;
+}
+
 .tooltip {
     pointer-events: none;
 }
diff --git a/src/Jackett.Common/Content/index.html b/src/Jackett.Common/Content/index.html
index 8fc583187..f04b12a8b 100644
--- a/src/Jackett.Common/Content/index.html
+++ b/src/Jackett.Common/Content/index.html
@@ -28,8 +28,8 @@
     <link rel="stylesheet" type="text/css" href="../bootstrap/bootstrap.min.css?changed=2017083001">
     <link rel="stylesheet" type="text/css" href="../animate.css?changed=2017083001">
     <link rel="stylesheet" type="text/css" href="../css/tagify.css?changed=11662">
-    <link rel="stylesheet" type="text/css" href="../custom.css?changed=202204251" media="only screen and (min-device-width: 480px)">
-    <link rel="stylesheet" type="text/css" href="../custom_mobile.css?changed=202204251" media="only screen and (max-device-width: 480px)">
+    <link rel="stylesheet" type="text/css" href="../custom.css?changed=20220512" media="only screen and (min-device-width: 480px)">
+    <link rel="stylesheet" type="text/css" href="../custom_mobile.css?changed=20220512" media="only screen and (max-device-width: 480px)">
     <link rel="stylesheet" type="text/css" href="../css/jquery.dataTables.min.css?changed=2017083001">
     <link rel="stylesheet" type="text/css" href="../css/bootstrap-multiselect.css?changed=2017083001" />
     <link rel="stylesheet" type="text/css" href="../css/font-awesome.min.css?changed=2017083001">
@@ -458,7 +458,7 @@
                             </thead>
                             <tbody>
                                 {{#each releases}}
-                                <tr class="jackett-releases-row" data-imdb="{{Imdb}}" data-tmdb="{{TMDb}}" data-tvdb="{{TVDBId}}" data-poster="{{Poster}}" data-description="{{Description}}">
+                                <tr class="jackett-releases-row" data-imdb="{{Imdb}}" data-tmdb="{{TMDb}}" data-tvdb="{{TVDBId}}" data-douban="{{DoubanId}}" data-poster="{{Poster}}" data-description="{{Description}}">
                                     <td class="fit">{{PublishDate}}</td>
                                     <td class="fit">{{FirstSeen}}</td>
                                     <td class="fit">{{jacketTimespan PublishDate}}</td>
@@ -586,7 +586,7 @@
             </thead>
             <tbody>
                 {{#each Results}}
-                <tr class="jackett-search-results-row" data-imdb="{{Imdb}}" data-tmdb="{{TMDb}}" data-tvdb="{{TVDBId}}" data-poster="{{Poster}}" data-description="{{Description}}">
+                <tr class="jackett-search-results-row" data-imdb="{{Imdb}}" data-tmdb="{{TMDb}}" data-tvdb="{{TVDBId}}" data-douban="{{DoubanId}}" data-poster="{{Poster}}" data-description="{{Description}}">
                     <td>{{PublishDate}}</td>
                     <td>{{jacketTimespan PublishDate}}</td>
                     <td>{{Tracker}}</td>
@@ -754,6 +754,6 @@
     </script>
 
     <script type="text/javascript" src="../libs/api.js?changed=2017083001"></script>
-    <script type="text/javascript" src="../custom.js?changed=20220426"></script>
+    <script type="text/javascript" src="../custom.js?changed=20220512"></script>
 </body>
 </html>
diff --git a/src/Jackett.Common/Content/login.html b/src/Jackett.Common/Content/login.html
index a5fe0973d..63e963e6d 100644
--- a/src/Jackett.Common/Content/login.html
+++ b/src/Jackett.Common/Content/login.html
@@ -16,7 +16,7 @@
 
     <link href="../bootstrap/bootstrap.min.css" rel="stylesheet">
     <link href="../animate.css" rel="stylesheet">
-    <link href="../custom.css?changed=202204251" rel="stylesheet">
+    <link href="../custom.css?changed=20220512" rel="stylesheet">
 
     <title>Jackett</title>
 </head>
diff --git a/src/Jackett.Common/Indexers/CardigannIndexer.cs b/src/Jackett.Common/Indexers/CardigannIndexer.cs
index 581c22cc0..8499154d9 100644
--- a/src/Jackett.Common/Indexers/CardigannIndexer.cs
+++ b/src/Jackett.Common/Indexers/CardigannIndexer.cs
@@ -38,7 +38,7 @@ namespace Jackett.Common.Indexers
             set => base.configData = value;
         }
 
-        protected readonly string[] OptionalFields = { "imdb", "imdbid", "rageid", "tmdbid", "tvdbid", "poster", "description" };
+        protected readonly string[] OptionalFields = { "imdb", "imdbid", "rageid", "tmdbid", "tvdbid", "poster", "description", "doubanid" };
 
         private static readonly string[] _SupportedLogicFunctions =
         {
@@ -2030,6 +2030,13 @@ namespace Jackett.Common.Indexers
                     release.TMDb = ParseUtil.CoerceLong(TmdbID);
                     value = release.TMDb.ToString();
                     break;
+                case "doubanid":
+                    var DoubanIDRegEx = new Regex(@"(\d+)", RegexOptions.Compiled);
+                    var DoubanIDMatch = DoubanIDRegEx.Match(value);
+                    var DoubanID = DoubanIDMatch.Groups[1].Value;
+                    release.DoubanId = ParseUtil.CoerceLong(DoubanID);
+                    value = release.DoubanId.ToString();
+                    break;
                 case "rageid":
                     var RageIDRegEx = new Regex(@"(\d+)", RegexOptions.Compiled);
                     var RageIDMatch = RageIDRegEx.Match(value);
diff --git a/src/Jackett.Common/Models/ReleaseInfo.cs b/src/Jackett.Common/Models/ReleaseInfo.cs
index 9ce0f2159..69ae23db3 100644
--- a/src/Jackett.Common/Models/ReleaseInfo.cs
+++ b/src/Jackett.Common/Models/ReleaseInfo.cs
@@ -24,6 +24,7 @@ namespace Jackett.Common.Models
         public long? TVDBId { get; set; }
         public long? Imdb { get; set; }
         public long? TMDb { get; set; }
+        public long? DoubanId { get; set; }
         public string Author { get; set; }
         public string BookTitle { get; set; }
         public long? Seeders { get; set; }
@@ -61,6 +62,7 @@ namespace Jackett.Common.Models
             RageID = copyFrom.RageID;
             Imdb = copyFrom.Imdb;
             TMDb = copyFrom.TMDb;
+            DoubanId = copyFrom.DoubanId;
             Author = copyFrom.Author;
             BookTitle = copyFrom.BookTitle;
             Seeders = copyFrom.Seeders;
@@ -115,6 +117,6 @@ namespace Jackett.Common.Models
         public static long BytesFromKB(float kb) => (long)(kb * 1024f);
 
         public override string ToString() =>
-            $"[ReleaseInfo: Title={Title}, Guid={Guid}, Link={Link}, Details={Details}, PublishDate={PublishDate}, Category={Category}, Size={Size}, Files={Files}, Grabs={Grabs}, Description={Description}, RageID={RageID}, TVDBId={TVDBId}, Imdb={Imdb}, TMDb={TMDb}, Seeders={Seeders}, Peers={Peers}, Poster={Poster}, InfoHash={InfoHash}, MagnetUri={MagnetUri}, MinimumRatio={MinimumRatio}, MinimumSeedTime={MinimumSeedTime}, DownloadVolumeFactor={DownloadVolumeFactor}, UploadVolumeFactor={UploadVolumeFactor}, Gain={Gain}]";
+            $"[ReleaseInfo: Title={Title}, Guid={Guid}, Link={Link}, Details={Details}, PublishDate={PublishDate}, Category={Category}, Size={Size}, Files={Files}, Grabs={Grabs}, Description={Description}, RageID={RageID}, TVDBId={TVDBId}, Imdb={Imdb}, TMDb={TMDb}, DoubanId={DoubanId}, Seeders={Seeders}, Peers={Peers}, Poster={Poster}, InfoHash={InfoHash}, MagnetUri={MagnetUri}, MinimumRatio={MinimumRatio}, MinimumSeedTime={MinimumSeedTime}, DownloadVolumeFactor={DownloadVolumeFactor}, UploadVolumeFactor={UploadVolumeFactor}, Gain={Gain}]";
     }
 }