diff --git a/Cargo.lock b/Cargo.lock
index ef41b2c..d2bdc54 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -182,7 +182,7 @@ checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "comicviewer"
-version = "0.2.14"
+version = "0.2.15"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 9a0e272..5af3812 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "comicviewer"
-version = "0.2.14"
+version = "0.2.15"
 edition = "2024"
 description = "A comic archive viewer for local and remote locations"
 license = "GPL-3.0-or-later"
diff --git a/data/io.github.comicviewer.Comicviewer.metainfo.xml b/data/io.github.comicviewer.Comicviewer.metainfo.xml
index d7e57fd..9fa6f2b 100644
--- a/data/io.github.comicviewer.Comicviewer.metainfo.xml
+++ b/data/io.github.comicviewer.Comicviewer.metainfo.xml
@@ -26,6 +26,7 @@
   </provides>
   <content_rating type="oars-1.1" />
   <releases>
+    <release version="0.2.15" date="2026-08-21" />
     <release version="0.2.14" date="2026-08-21" />
     <release version="0.2.13" date="2026-08-21" />
     <release version="0.2.12" date="2026-07-29" />
diff --git a/docs/RELEASING.ko.md b/docs/RELEASING.ko.md
index a05bf1f..d2551ee 100644
--- a/docs/RELEASING.ko.md
+++ b/docs/RELEASING.ko.md
@@ -55,7 +55,7 @@ AppImage 빌드가 끝나면 다음 스크립트로 체크섬과 통합 `tar.gz`
 
 스크립트는 `Cargo.toml`에서 버전을 읽고 다음 파일을 생성합니다.
 
-- `dist/Comicviewer-0.2.14-x86_64.AppImage.sha256`
+- `dist/Comicviewer-0.2.15-x86_64.AppImage.sha256`
 - `dist/Comicviewer-latest-x86_64.tar.gz`
 - `dist/Comicviewer-latest-x86_64.tar.gz.sha256`
 
@@ -78,10 +78,10 @@ sha256sum -c Comicviewer-latest-x86_64.tar.gz.sha256
 
 ```sh
 git add Cargo.toml Cargo.lock data packaging README.md docs
-git commit -m "Release v0.2.14"
-git tag -a v0.2.14 -m "Comicviewer v0.2.14"
+git commit -m "Release v0.2.15"
+git tag -a v0.2.15 -m "Comicviewer v0.2.15"
 git push origin main
-git push origin v0.2.14
+git push origin v0.2.15
 ```
 
 이미 원격에 공개한 태그는 이동하거나 덮어쓰지 않습니다. 수정이 필요하면 새
diff --git a/src/viewer.rs b/src/viewer.rs
index 8832a74..3587a91 100644
--- a/src/viewer.rs
+++ b/src/viewer.rs
@@ -286,7 +286,11 @@ impl ViewerWindow {
         } = controls;
         let direction_control = two_page_direction_control
             .expect("archive viewer requires a two-page direction control");
-        let title = source.display_name.clone();
+        let title_files = sibling_navigator
+            .as_ref()
+            .map(SiblingNavigator::files)
+            .unwrap_or_default();
+        let title = viewer_file_title(&source.display_name, &source.source_uri, &title_files);
         let file_list_query = reuse_window
             .as_ref()
             .map(viewer_file_search_query)
@@ -2260,7 +2264,11 @@ impl MediaViewerWindow {
             view_mode_control,
             two_page_direction_control: _,
         } = controls;
-        let title = source.display_name.clone();
+        let title_files = sibling_navigator
+            .as_ref()
+            .map(SiblingNavigator::files)
+            .unwrap_or_default();
+        let title = viewer_file_title(&source.display_name, &source.source_uri, &title_files);
         let file_list_query = reuse_window
             .as_ref()
             .map(viewer_file_search_query)
@@ -2341,7 +2349,7 @@ impl MediaViewerWindow {
         });
         stack.add_named(&video, Some("video"));
         let status_label = gtk::Label::builder()
-            .label(&title)
+            .label(&source.display_name)
             .xalign(0.0)
             .margin_top(6)
             .margin_bottom(6)
@@ -3425,6 +3433,13 @@ fn viewer_title_label(title: &str) -> gtk::Label {
         .build()
 }
 
+fn viewer_file_title(display_name: &str, current_uri: &str, files: &[SiblingFile]) -> String {
+    seek_position(files, current_uri).map_or_else(
+        || display_name.to_owned(),
+        |index| format!("{display_name} ({}/{})", index + 1, files.len()),
+    )
+}
+
 struct ViewerFileList {
     panel: gtk::Box,
     search: gtk::SearchEntry,
@@ -4292,6 +4307,28 @@ mod tests {
         assert_eq!(seek_sibling_files(files, EntryKind::Image, true).len(), 3);
     }
 
+    #[test]
+    fn viewer_title_includes_current_file_index() {
+        let files = ["first.zip", "second.jpg", "third.mp4"].map(|name| SiblingFile {
+            uri: format!("file:///{name}"),
+            name: name.into(),
+            kind: EntryKind::Image,
+        });
+
+        assert_eq!(
+            viewer_file_title("second.jpg", "file:///second.jpg", &files),
+            "second.jpg (2/3)"
+        );
+        assert_eq!(
+            viewer_file_title("missing.jpg", "file:///missing.jpg", &files),
+            "missing.jpg"
+        );
+        assert_eq!(
+            viewer_file_title("only.jpg", "file:///only.jpg", &[]),
+            "only.jpg"
+        );
+    }
+
     #[test]
     fn playlist_search_filters_and_empty_query_restores_files() {
         let files = ["Alpha.zip", "beta.jpg", "Bravo.mp4"].map(|name| SiblingFile {