diff --git a/bundlesize.config.json b/bundlesize.config.json
index d52bba3cf..97f371bbb 100644
--- a/bundlesize.config.json
+++ b/bundlesize.config.json
@@ -10,7 +10,7 @@
 		},
 		{
 			"resourceModule": "mmv.codex",
-			"maxSize": "5.2 kB"
+			"maxSize": "5.4 kB"
 		},
 		{
 			"resourceModule": "mmv.ui.reuse",
diff --git a/extension.json b/extension.json
index 9dfa7c038..ed8c379f6 100644
--- a/extension.json
+++ b/extension.json
@@ -102,6 +102,7 @@
 			],
 			"messages": [
 				"license-header",
+				"multimediaviewer-current-image-number",
 				"multimediaviewer-file-page",
 				"multimediaviewer-enable-alert",
 				"multimediaviewer-disable-confirmation-header",
diff --git a/i18n/en.json b/i18n/en.json
index 6e744a3c0..23217eb22 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -4,6 +4,7 @@
 			"Mark Holmquist <mtraceur@member.fsf.org>"
 		]
 	},
+	"multimediaviewer-current-image-number": "$1 ⁄ $2",
 	"multimediaviewer-desc": "Expand thumbnails in a larger size in a fullscreen interface",
 	"multimediaviewer-optin-pref": "Enable <span class=\"plainlinks\">[https://www.mediawiki.org/wiki/Special:MyLanguage/Extension:Media_Viewer/About Media Viewer]</span>",
 	"multimediaviewer-file-page": "Go to corresponding file page",
diff --git a/i18n/qqq.json b/i18n/qqq.json
index 2f328048a..a1ba6a7d0 100644
--- a/i18n/qqq.json
+++ b/i18n/qqq.json
@@ -17,6 +17,7 @@
 			"Wladek92"
 		]
 	},
+	"multimediaviewer-current-image-number": "Message for displaying the current image number ($1) and the total number of images ($2).",
 	"multimediaviewer-desc": "{{desc|name=Multimedia Viewer|url=https://www.mediawiki.org/wiki/Extension:MultimediaViewer}}",
 	"multimediaviewer-optin-pref": "Label for preference to enable the Media Viewer.",
 	"multimediaviewer-file-page": "Text for a link to the file page for an image.",
diff --git a/resources/mmv/mmv.lightboxinterface.js b/resources/mmv/mmv.lightboxinterface.js
index 652ba1c82..0ded22e34 100644
--- a/resources/mmv/mmv.lightboxinterface.js
+++ b/resources/mmv/mmv.lightboxinterface.js
@@ -492,7 +492,12 @@ class LightboxInterface extends UiElement {
 
 		this.buttons.setOffset( prevNextTop );
 		this.buttons.$nav.toggle( imageCount > 1 );
-		this.buttons.$currentImageNumber.show().html( `${ currentIndex + 1 }&nbsp;&frasl;&nbsp;${ imageCount }` );
+		this.buttons.$currentImageNumber.show().text(
+			mw.msg( 'multimediaviewer-current-image-number',
+				mw.language.convertNumber( currentIndex + 1 ),
+				mw.language.convertNumber( imageCount )
+			)
+		);
 	}
 
 	/**