diff --git a/locales/de-DE/opencadstudio.ftl b/locales/de-DE/opencadstudio.ftl
index b7114711..79346055 100644
--- a/locales/de-DE/opencadstudio.ftl
+++ b/locales/de-DE/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = Die Zwischenablage enthält keinen unterstützt
 clipboard-unavailable = Die Systemzwischenablage ist nicht verfügbar.
 clipboard-occupied = Die Systemzwischenablage wird gerade verwendet. Versuchen Sie es erneut.
 clipboard-conversion-failed = Der Text in der Zwischenablage konnte nicht gelesen werden.
+viewport-split-vertical = Ansichtsfenster vertikal teilen
+viewport-split-horizontal = Ansichtsfenster horizontal teilen
+viewport-move = Ansichtsfenster verschieben
+viewport-close = Ansichtsfenster schließen
 modal-point-style = Punktstil
 modal-attribute-editor = Attribut-Editor
 modal-save-drawing-as = Zeichnung speichern als
diff --git a/locales/en-US/opencadstudio.ftl b/locales/en-US/opencadstudio.ftl
index 03521a4f..3b765265 100644
--- a/locales/en-US/opencadstudio.ftl
+++ b/locales/en-US/opencadstudio.ftl
@@ -113,6 +113,10 @@ clipboard-no-supported-content = Clipboard does not contain supported text or dr
 clipboard-unavailable = System clipboard is unavailable.
 clipboard-occupied = System clipboard is currently in use. Try again.
 clipboard-conversion-failed = Clipboard text could not be read.
+viewport-split-vertical = Split Viewport Vertically
+viewport-split-horizontal = Split Viewport Horizontally
+viewport-move = Move Viewport
+viewport-close = Close Viewport
 modal-point-style = Point Style
 modal-attribute-editor = Attribute Editor
 modal-save-drawing-as = Save Drawing As
diff --git a/locales/fr-FR/opencadstudio.ftl b/locales/fr-FR/opencadstudio.ftl
index 06832dca..d676f979 100644
--- a/locales/fr-FR/opencadstudio.ftl
+++ b/locales/fr-FR/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = Le presse-papiers ne contient aucun texte ni ob
 clipboard-unavailable = Le presse-papiers système n’est pas disponible.
 clipboard-occupied = Le presse-papiers système est en cours d’utilisation. Réessayez.
 clipboard-conversion-failed = Impossible de lire le texte du presse-papiers.
+viewport-split-vertical = Diviser la fenêtre verticalement
+viewport-split-horizontal = Diviser la fenêtre horizontalement
+viewport-move = Déplacer la fenêtre
+viewport-close = Fermer la fenêtre
 modal-point-style = Style de point
 modal-attribute-editor = Éditeur d'attributs
 modal-save-drawing-as = Enregistrer le dessin sous
diff --git a/locales/hi-IN/opencadstudio.ftl b/locales/hi-IN/opencadstudio.ftl
index db28b85d..fc039232 100644
--- a/locales/hi-IN/opencadstudio.ftl
+++ b/locales/hi-IN/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = क्लिपबोर्ड में सम
 clipboard-unavailable = सिस्टम क्लिपबोर्ड उपलब्ध नहीं है।
 clipboard-occupied = सिस्टम क्लिपबोर्ड अभी उपयोग में है। फिर प्रयास करें।
 clipboard-conversion-failed = क्लिपबोर्ड का टेक्स्ट पढ़ा नहीं जा सका।
+viewport-split-vertical = व्यूपोर्ट को लंबवत विभाजित करें
+viewport-split-horizontal = व्यूपोर्ट को क्षैतिज विभाजित करें
+viewport-move = व्यूपोर्ट ले जाएँ
+viewport-close = व्यूपोर्ट बंद करें
 modal-point-style = प्वाइंट स्टाइल
 modal-attribute-editor = विशेषता संपादक
 modal-save-drawing-as = ड्रॉइंग इस रूप में सहेजें
diff --git a/locales/nl-NL/opencadstudio.ftl b/locales/nl-NL/opencadstudio.ftl
index 2833fb01..d3bd2418 100644
--- a/locales/nl-NL/opencadstudio.ftl
+++ b/locales/nl-NL/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = Het klembord bevat geen ondersteunde tekst of t
 clipboard-unavailable = Het systeemklembord is niet beschikbaar.
 clipboard-occupied = Het systeemklembord is momenteel in gebruik. Probeer het opnieuw.
 clipboard-conversion-failed = De tekst op het klembord kon niet worden gelezen.
+viewport-split-vertical = Viewport verticaal splitsen
+viewport-split-horizontal = Viewport horizontaal splitsen
+viewport-move = Viewport verplaatsen
+viewport-close = Viewport sluiten
 modal-point-style = Puntstijl
 modal-attribute-editor = Kenmerkeditor
 modal-save-drawing-as = Tekening opslaan als
diff --git a/locales/ru-RU/opencadstudio.ftl b/locales/ru-RU/opencadstudio.ftl
index 7ad2fcf2..5de47427 100644
--- a/locales/ru-RU/opencadstudio.ftl
+++ b/locales/ru-RU/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = Буфер обмена не содержит 
 clipboard-unavailable = Системный буфер обмена недоступен.
 clipboard-occupied = Системный буфер обмена сейчас используется. Повторите попытку.
 clipboard-conversion-failed = Не удалось прочитать текст из буфера обмена.
+viewport-split-vertical = Разделить видовой экран по вертикали
+viewport-split-horizontal = Разделить видовой экран по горизонтали
+viewport-move = Переместить видовой экран
+viewport-close = Закрыть видовой экран
 modal-point-style = Стиль точек
 modal-attribute-editor = Редактор атрибутов
 modal-save-drawing-as = Сохранить чертеж как
diff --git a/locales/tr-TR/opencadstudio.ftl b/locales/tr-TR/opencadstudio.ftl
index dd8824b9..2c37fa60 100644
--- a/locales/tr-TR/opencadstudio.ftl
+++ b/locales/tr-TR/opencadstudio.ftl
@@ -113,6 +113,10 @@ clipboard-no-supported-content = Panoda desteklenen metin veya çizim nesnesi yo
 clipboard-unavailable = Sistem panosuna erişilemiyor.
 clipboard-occupied = Sistem panosu şu anda kullanılıyor. Yeniden deneyin.
 clipboard-conversion-failed = Panodaki metin okunamadı.
+viewport-split-vertical = Görünüm Penceresini Dikey Böl
+viewport-split-horizontal = Görünüm Penceresini Yatay Böl
+viewport-move = Görünüm Penceresini Taşı
+viewport-close = Görünüm Penceresini Kapat
 modal-point-style = Nokta Stili
 modal-attribute-editor = Öznitelik Düzenleyicisi
 modal-save-drawing-as = Çizimi Farklı Kaydet
diff --git a/locales/zh-CN/opencadstudio.ftl b/locales/zh-CN/opencadstudio.ftl
index 5ee38a8f..92be5420 100644
--- a/locales/zh-CN/opencadstudio.ftl
+++ b/locales/zh-CN/opencadstudio.ftl
@@ -94,6 +94,10 @@ clipboard-no-supported-content = 剪贴板中没有受支持的文本或图形
 clipboard-unavailable = 系统剪贴板不可用。
 clipboard-occupied = 系统剪贴板当前正被使用，请重试。
 clipboard-conversion-failed = 无法读取剪贴板文本。
+viewport-split-vertical = 垂直拆分视口
+viewport-split-horizontal = 水平拆分视口
+viewport-move = 移动视口
+viewport-close = 关闭视口
 modal-point-style = 点样式
 modal-attribute-editor = 属性编辑器
 modal-save-drawing-as = 图纸另存为
diff --git a/src/app/view/controls.rs b/src/app/view/controls.rs
index 6c83a9c7..8b877c03 100644
--- a/src/app/view/controls.rs
+++ b/src/app/view/controls.rs
@@ -1,10 +1,26 @@
 use super::*;
 use super::super::document::{DynComponent, DynFieldEntry};
 use super::super::Message;
-use iced::widget::{
-    button, container, mouse_area, row,
-};
+use iced::widget::{button, container, mouse_area, row, tooltip};
 use iced::{Background, Border, Element, Theme};
+use std::time::Duration;
+
+fn viewport_tooltip<'a>(
+    control: impl Into<Element<'a, Message>>,
+    title: String,
+    command: &'static str,
+) -> Element<'a, Message> {
+    let text = format!("{title}\n{} {command}", crate::t!("Command:"));
+    tooltip(
+        control,
+        crate::ui::ribbon::tooltip_content(text),
+        tooltip::Position::Bottom,
+    )
+    .gap(6.0)
+    .delay(Duration::from_millis(400))
+    .style(crate::ui::ribbon::tooltip_style)
+    .into()
+}
 
 pub(super) fn viewport_controls<'a>(
     render_mode: acadrust::entities::ViewportRenderMode,
@@ -23,8 +39,11 @@ pub(super) fn viewport_controls<'a>(
         RenderModeChoice(M::FlatShadedWithEdges),
         RenderModeChoice(M::GouraudShadedWithEdges),
     ];
-    let danger_btn = move |bytes: &'static [u8], msg: Message| {
-        button(crate::ui::icons::themed_danger(bytes, 15.0))
+    let danger_btn = move |bytes: &'static [u8],
+                           msg: Message,
+                           title: String,
+                           command: &'static str| {
+        let button = button(crate::ui::icons::themed_danger(bytes, 15.0))
             .on_press(msg)
             .padding([4, 6])
             .style(move |theme: &Theme, status| iced::widget::button::Style {
@@ -33,26 +52,29 @@ pub(super) fn viewport_controls<'a>(
                     iced::widget::button::Status::Hovered
                         | iced::widget::button::Status::Pressed
                 )
-                .then_some(Background::Color(
-                    theme.palette().danger.weak.color
-                )),
+                .then_some(Background::Color(theme.palette().danger.weak.color)),
                 border: Border {
                     radius: 3.0.into(),
                     ..Default::default()
                 },
                 text_color: theme.palette().danger.base.color,
                 ..Default::default()
-            })
+            });
+        viewport_tooltip(button, title, command)
     };
 
     // Borderless icon button; an `active` toggle gets an accent tint + fill.
-    let icon_btn = move |bytes: &'static [u8], active: bool, msg: Message| {
+    let icon_btn = move |bytes: &'static [u8],
+                         active: bool,
+                         msg: Message,
+                         title: String,
+                         command: &'static str| {
         let icon = if active {
             crate::ui::icons::themed_primary(bytes, 15.0)
         } else {
             crate::ui::icons::themed(bytes, 15.0)
         };
-        button(icon)
+        let button = button(icon)
             .on_press(msg)
             .padding([4, 6])
             .style(move |theme: &Theme, status| {
@@ -75,7 +97,8 @@ pub(super) fn viewport_controls<'a>(
                     .unwrap_or(palette.background.base.text),
                 ..Default::default()
                 }
-            })
+            });
+        viewport_tooltip(button, title, command)
     };
 
     // Render-mode picker, restyled borderless so the outer chip frames it.
@@ -100,6 +123,11 @@ pub(super) fn viewport_controls<'a>(
         handle_color: text,
         }
     });
+    let picker = viewport_tooltip(
+        picker,
+        crate::t!("Visual Style").into_owned(),
+        "VISUALSTYLES",
+    );
 
     // Thin vertical divider between control groups.
     let sep = || {
@@ -117,17 +145,41 @@ pub(super) fn viewport_controls<'a>(
         .spacing(3)
         .align_y(iced::alignment::Vertical::Center);
     bar = bar
-        .push(icon_btn(crate::ui::icons::GRID, show_grid, Message::ToggleGrid))
+        .push(icon_btn(
+            crate::ui::icons::GRID,
+            show_grid,
+            Message::ToggleGrid,
+            crate::t!("Toggle Grid").into_owned(),
+            "GRID",
+        ))
         .push(sep())
-        .push(icon_btn(crate::ui::icons::SNAP, snap_on, Message::ToggleGridSnap))
+        .push(icon_btn(
+            crate::ui::icons::SNAP,
+            snap_on,
+            Message::ToggleGridSnap,
+            crate::t!("Toggle Grid Snap").into_owned(),
+            "SNAP",
+        ))
         .push(sep())
         .push(picker);
     if include_split {
         bar = bar
             .push(sep())
-            .push(icon_btn(crate::ui::icons::SPLIT_V, false, Message::SplitModelViewport(false)))
+            .push(icon_btn(
+                crate::ui::icons::SPLIT_V,
+                false,
+                Message::SplitModelViewport(false),
+                crate::tr!("viewport-split-vertical"),
+                "VPORTS 2V",
+            ))
             .push(sep())
-            .push(icon_btn(crate::ui::icons::SPLIT_H, false, Message::SplitModelViewport(true)));
+            .push(icon_btn(
+                crate::ui::icons::SPLIT_H,
+                false,
+                Message::SplitModelViewport(true),
+                crate::tr!("viewport-split-horizontal"),
+                "VPORTS 2H",
+            ));
         // Drag handle + close: only meaningful with more than one model tile.
         // The handle is a `mouse_area` (not a button) so it fires on press-DOWN,
         // letting the drag continue onto the target pane to swap them (a button
@@ -146,11 +198,17 @@ pub(super) fn viewport_controls<'a>(
             )
             .interaction(iced::mouse::Interaction::Grab)
             .on_press(Message::PaneMoveStart);
+            let drag = viewport_tooltip(drag, crate::tr!("viewport-move"), "VPORTS");
             bar = bar
                 .push(sep())
                 .push(drag)
                 .push(sep())
-                .push(danger_btn(crate::ui::icons::CLOSE, Message::CloseModelViewport));
+                .push(danger_btn(
+                    crate::ui::icons::CLOSE,
+                    Message::CloseModelViewport,
+                    crate::tr!("viewport-close"),
+                    "VPORTS SINGLE",
+                ));
         }
     }
 
diff --git a/src/ui/ribbon/mod.rs b/src/ui/ribbon/mod.rs
index 69e3a034..a002cf64 100644
--- a/src/ui/ribbon/mod.rs
+++ b/src/ui/ribbon/mod.rs
@@ -28,6 +28,14 @@ pub use collapse::CollapseMode;
 use crate::ui::wrap_bar::{PosReport, WrapBar, WrapFlow};
 use crate::t;
 
+pub(crate) fn tooltip_content(text: String) -> Element<'static, Message> {
+    widgets::make_tip(text)
+}
+
+pub(crate) fn tooltip_style(theme: &Theme) -> container::Style {
+    widgets::tip_style(theme)
+}
+
 // ── Ribbon state ───────────────────────────────────────────────────────────
 
 pub struct Ribbon {