--- /dev/null
+<?php
+
+namespace Drupal\metatag_mobile\Plugin\metatag\Tag;
+
+use Drupal\metatag\Plugin\metatag\Tag\LinkRelBase;
+
+/**
+ * The Web Manifest for Progressive Web Apps.
+ *
+ * @MetatagTag(
+ * id = "web_manifest",
+ * label = @Translation("Web Manifest"),
+ * description = @Translation("A URL to a manifest.json file that describes the application. The <a href='https://developer.mozilla.org/en-US/docs/Web/Manifest'>JSON-based manifest</a> provides developers with a centralized place to put metadata associated with a web application."),
+ * name = "manifest",
+ * group = "mobile",
+ * weight = 92,
+ * type = "uri",
+ * secure = FALSE,
+ * multiple = FALSE
+ * )
+ */
+class WebManifest extends LinkRelBase {
+ // Nothing here yet. Just a placeholder class for a plugin.
+}