diff --git a/autotests/jsonplugin.json b/autotests/jsonplugin.json
--- a/autotests/jsonplugin.json
+++ b/autotests/jsonplugin.json
@@ -6,6 +6,7 @@
         "Description[pt_BR]": "Isto é um plugin", 
         "Description[sv]": "Det här är ett insticksprogram", 
         "Description[uk]": "Це додаток", 
-        "Description[x-test]": "xxThis is a pluginxx"
+        "Description[x-test]": "xxThis is a pluginxx",
+        "MimeTypes": [ "text/plain", "image/png" ]
     }
-}
\ No newline at end of file
+}
diff --git a/autotests/jsonplugin2.json b/autotests/jsonplugin2.json
--- a/autotests/jsonplugin2.json
+++ b/autotests/jsonplugin2.json
@@ -7,6 +7,7 @@
         "Description[sv]": "Det här är ännu ett insticksprogram", 
         "Description[uk]": "Це інший додаток", 
         "Description[x-test]": "xxThis is another pluginxx", 
-        "Id": "foobar"
+        "Id": "foobar",
+        "MimeTypes": [ "text/html" ]
     }
-}
\ No newline at end of file
+}
diff --git a/autotests/kpluginloadertest.cpp b/autotests/kpluginloadertest.cpp
--- a/autotests/kpluginloadertest.cpp
+++ b/autotests/kpluginloadertest.cpp
@@ -345,6 +345,20 @@
         QCOMPARE(plugins[0].description(), QStringLiteral("This is another plugin"));
         QCOMPARE(plugins[1].description(), QStringLiteral("This is a plugin"));
 
+        // mimetype filter. Only one match, jsonplugin2 is specific to text/html.
+        auto supportTextPlain = [](const KPluginMetaData &metaData) { return metaData.supportsMimeType(QLatin1String("text/plain")); };
+        plugins = KPluginLoader::findPlugins(QStringLiteral("kpluginmetadatatest"), supportTextPlain);
+        QCOMPARE(plugins.size(), 1);
+        QCOMPARE(plugins[0].description(), QStringLiteral("This is a plugin"));
+
+        // mimetype filter. Two matches, both support text/html, via inheritance.
+        auto supportTextHtml = [](const KPluginMetaData &metaData) { return metaData.supportsMimeType(QLatin1String("text/html")); };
+        plugins = KPluginLoader::findPlugins(QStringLiteral("kpluginmetadatatest"), supportTextHtml);
+        std::sort(plugins.begin(), plugins.end(), sortPlugins);
+        QCOMPARE(plugins.size(), 2);
+        QCOMPARE(plugins[0].description(), QStringLiteral("This is another plugin"));
+        QCOMPARE(plugins[1].description(), QStringLiteral("This is a plugin"));
+
         // invalid std::function as filter
         plugins = KPluginLoader::findPlugins(QStringLiteral("kpluginmetadatatest"));
         std::sort(plugins.begin(), plugins.end(), sortPlugins);
diff --git a/src/lib/plugin/kpluginmetadata.h b/src/lib/plugin/kpluginmetadata.h
--- a/src/lib/plugin/kpluginmetadata.h
+++ b/src/lib/plugin/kpluginmetadata.h
@@ -330,6 +330,14 @@
      */
     QStringList mimeTypes() const;
 
+    /**
+     * @return true if this plugin can handle the given mimetype
+     * This is more accurate than mimeTypes().contains(mimeType) because it also
+     * takes MIME type inheritance into account.
+     * @since 5.66
+     */
+    bool supportsMimeType(const QString &mimeType) const;
+
     /**
      * @return A string list of formfactors this plugin is useful for, e.g. desktop, tablet,
      * handset, mediacenter, etc.
diff --git a/src/lib/plugin/kpluginmetadata.cpp b/src/lib/plugin/kpluginmetadata.cpp
--- a/src/lib/plugin/kpluginmetadata.cpp
+++ b/src/lib/plugin/kpluginmetadata.cpp
@@ -23,6 +23,7 @@
 #include <QJsonArray>
 #include <QJsonDocument>
 #include <QLocale>
+#include <QMimeDatabase>
 #include <QPluginLoader>
 #include <QStringList>
 #include "kcoreaddons_debug.h"
@@ -331,6 +332,18 @@
     return readStringList(rootObject(), QStringLiteral("MimeTypes"));
 }
 
+bool KPluginMetaData::supportsMimeType(const QString &mimeType) const
+{
+    QMimeDatabase db;
+    const QMimeType mime = db.mimeTypeForName(mimeType);
+
+    const QStringList mimes = mimeTypes();
+    auto inherits = [&](const QString &supportedMimeName) {
+        return mime.inherits(supportedMimeName);
+    };
+    return std::find_if(mimes.begin(), mimes.end(), inherits) != mimes.end();
+}
+
 QStringList KPluginMetaData::formFactors() const
 {
     return readStringList(rootObject(), QStringLiteral("FormFactors"));