diff --git a/_locales/de/messages.json b/_locales/de/messages.json
index 9d0625c..25a7283 100644
--- a/_locales/de/messages.json
+++ b/_locales/de/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Relative Fälligkeitsdaten"
   },
+  "equal_height_cards": {
+    "message": "Gleiche Höhe"
+  },
   "enter_multiple": {
     "message": "(Mehrere mit Komma eingeben)"
   },
diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 763e5c7..6aa66f7 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -122,6 +122,9 @@
 	"relative_due_dates": {
 		"message": "Relative Due Dates"
 	},
+	"equal_height_cards": {
+		"message": "Equal Height"
+	},
 	"enter_multiple": {
 		"message": "(Enter Multiple With A Comma)"
 	},
diff --git a/_locales/es/messages.json b/_locales/es/messages.json
index 98f3a62..791af9e 100644
--- a/_locales/es/messages.json
+++ b/_locales/es/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Fechas pendientes relativas"
   },
+  "equal_height_cards": {
+    "message": "Altura igual"
+  },
   "enter_multiple": {
     "message": "(Ingrese varios con una coma)"
   },
diff --git a/_locales/fr/messages.json b/_locales/fr/messages.json
index 9c7670b..3b9f03c 100644
--- a/_locales/fr/messages.json
+++ b/_locales/fr/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Dates d'échéance relatives"
   },
+  "equal_height_cards": {
+    "message": "Hauteur égale"
+  },
   "enter_multiple": {
     "message": "(Entrez plusieurs avec une virgule)"
   },
diff --git a/_locales/it/messages.json b/_locales/it/messages.json
index e0ee3b2..3b84286 100644
--- a/_locales/it/messages.json
+++ b/_locales/it/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Date di scadenza relative"
   },
+  "equal_height_cards": {
+    "message": "Altezza uguale"
+  },
   "enter_multiple": {
     "message": "(Inserisci più numeri con una virgola)"
   },
diff --git a/_locales/ja/messages.json b/_locales/ja/messages.json
index 2c2558b..7844d83 100644
--- a/_locales/ja/messages.json
+++ b/_locales/ja/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "相対的な期日"
   },
+  "equal_height_cards": {
+    "message": "高さを揃える"
+  },
   "enter_multiple": {
     "message": "(カンマで複数入力)"
   },
diff --git a/_locales/pt_PT/messages.json b/_locales/pt_PT/messages.json
index c34d903..615f8f5 100644
--- a/_locales/pt_PT/messages.json
+++ b/_locales/pt_PT/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Datas de vencimento relativas"
   },
+  "equal_height_cards": {
+    "message": "Altura igual"
+  },
   "enter_multiple": {
     "message": "(Digite vários com uma vírgula)"
   },
diff --git a/_locales/ru/messages.json b/_locales/ru/messages.json
index 330510d..a16213a 100644
--- a/_locales/ru/messages.json
+++ b/_locales/ru/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Относительные сроки выполнения"
   },
+  "equal_height_cards": {
+    "message": "Одинаковая высота"
+  },
   "enter_multiple": {
     "message": "(Введите несколько через запятую)"
   },
diff --git a/_locales/sv/messages.json b/_locales/sv/messages.json
index 391df5b..0e59384 100644
--- a/_locales/sv/messages.json
+++ b/_locales/sv/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "Relativa förfallodatum"
   },
+  "equal_height_cards": {
+    "message": "Jämn höjd"
+  },
   "enter_multiple": {
     "message": "(Ange flera med komma)"
   },
diff --git a/_locales/zh_CN/messages.json b/_locales/zh_CN/messages.json
index f3506ed..72a9006 100644
--- a/_locales/zh_CN/messages.json
+++ b/_locales/zh_CN/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "相对到期日"
   },
+  "equal_height_cards": {
+    "message": "等高"
+  },
   "enter_multiple": {
     "message": "(用逗号输入多个)"
   },
diff --git a/_locales/zh_TW/messages.json b/_locales/zh_TW/messages.json
index f3506ed..72a9006 100644
--- a/_locales/zh_TW/messages.json
+++ b/_locales/zh_TW/messages.json
@@ -113,6 +113,9 @@
   "relative_due_dates": {
     "message": "相对到期日"
   },
+  "equal_height_cards": {
+    "message": "等高"
+  },
   "enter_multiple": {
     "message": "(用逗号输入多个)"
   },
diff --git a/html/popup.html b/html/popup.html
index 942208c..59530e5 100644
--- a/html/popup.html
+++ b/html/popup.html
@@ -120,6 +120,10 @@
                             <input type="checkbox" id="relative_dues" name="relative_dues">
                             <label for="relative_dues" class="sub-text" data-i18n="relative_due_dates">Relative due dates</label>
                         </div>
+                        <div class="sub-option">
+                            <input type="checkbox" id="equal_height_cards" name="equal_height_cards">
+                            <label for="equal_height_cards" class="sub-text" data-i18n="equal_height_cards">Equal height</label>
+                        </div>
                         <div style="margin-top: 5px">
                             <span class="sub-text" data-i18n="max_items">Max items to show: </span><span
                                 id="numAssignments"></span>
diff --git a/js/background.js b/js/background.js
index 85aec37..a88bc2c 100644
--- a/js/background.js
+++ b/js/background.js
@@ -72,6 +72,7 @@ chrome.runtime.onInstalled.addListener(function () {
             // "todo_overdues": false,
             "card_overdues": false,
             "relative_dues": false,
+            "equal_height_cards": false,
             "hide_feedback": false,
             "dark_mode_fix": [],
             "assignment_states": {},
diff --git a/js/content.js b/js/content.js
index 6af0c8a..0db3283 100644
--- a/js/content.js
+++ b/js/content.js
@@ -663,6 +663,11 @@ function applyOptionsChanges(changes) {
 				cardAssignments = preloadAssignmentEls();
 				loadCardAssignments();
 				break;
+			case "equal_height_cards":
+				// No need to rebuild the assignment rows — just stretch (or reset)
+				// the card heights in place for a snappy toggle.
+				equalizeCardHeights();
+				break;
 			case "custom_cards":
 			case "custom_cards_2":
 			case "custom_cards_3":
@@ -3537,6 +3542,51 @@ function createCardAssignment(assignment) {
 
 let cardAssignments;
 
+/*
+Equal Height Cards — when enabled, every dashboard card's assignment area is
+stretched to match the tallest one so cards with fewer assignments don't end
+up shorter than the rest. Uses min-height (never a fixed height) so cards can
+still grow if their content exceeds the tallest card.
+*/
+let equalHeightResizeTimer = null;
+
+function equalizeCardHeights() {
+    const cards = document.querySelectorAll(".ic-DashboardCard");
+    if (cards.length === 0) return;
+
+    const enabled = options.equal_height_cards === true && options.assignments_due === true;
+
+    // Always clear any previously applied min-height first so we can either
+    // measure natural heights (when enabling) or fully reset (when disabling).
+    cards.forEach(card => {
+        const area = card.querySelector(".canvasrefined-card-assignment");
+        if (area) area.style.removeProperty("min-height");
+    });
+
+    if (!enabled) return;
+
+    // Measure the natural height of each card's assignment area, then stretch
+    // every area to the tallest one. Card headers are uniform, so equalizing
+    // the assignment area makes all cards the same total height.
+    let maxHeight = 0;
+    cards.forEach(card => {
+        const area = card.querySelector(".canvasrefined-card-assignment");
+        if (area) maxHeight = Math.max(maxHeight, area.offsetHeight);
+    });
+
+    if (maxHeight > 0) {
+        cards.forEach(card => {
+            const area = card.querySelector(".canvasrefined-card-assignment");
+            if (area) area.style.minHeight = maxHeight + "px";
+        });
+    }
+}
+
+window.addEventListener("resize", () => {
+    if (equalHeightResizeTimer) clearTimeout(equalHeightResizeTimer);
+    equalHeightResizeTimer = setTimeout(equalizeCardHeights, 150);
+});
+
 function preloadAssignmentEls() {
     return new Promise((resolve, reject) => {
         let assignmentEls = {};
@@ -3569,6 +3619,7 @@ function loadCardAssignments() {
         document.querySelectorAll(".canvasrefined-card-assignment").forEach(card => {
             card.style.display = "none";
         });
+        equalizeCardHeights();
         return;
     }
     setupCardAssignments();
@@ -3608,6 +3659,9 @@ function loadCardAssignments() {
                     let assignmentDivLink = makeElement("a", assignmentContainer, { "className": "canvasrefined-assignment-link", "textContent": "None" });
                 }
             });
+            // Wait one frame so the browser lays out the freshly appended
+            // assignment rows before measuring/equalizing card heights.
+            requestAnimationFrame(equalizeCardHeights);
         } catch (e) {
             logError(e);
         }
diff --git a/js/popup.js b/js/popup.js
index bed498c..dd7d206 100644
--- a/js/popup.js
+++ b/js/popup.js
@@ -6,6 +6,7 @@ const syncedSubOptions = [
 	"device_dark",
 	"relative_dues",
 	"card_overdues",
+	"equal_height_cards",
 	// "todo_overdues",
 	"gpa_calc_prepend",
 	"auto_dark",
@@ -112,6 +113,7 @@ const defaultOptions = {
         // "todo_overdues": false,
         "card_overdues": false,
         "relative_dues": false,
+        "equal_height_cards": false,
         "hide_feedback": false,
         "dark_mode_fix": [],
         "assignment_states": {},
@@ -412,6 +414,25 @@ function toggleBetterTodoSubOptions(betterTodoOn) {
     }
 }
 
+// Hide the sub-options of a big toggle when it is turned off.
+// For gpa_calc / assignments_due / better_todo the whole .sub-options block is
+// hidden. For auto_dark ("schedule dark mode") only the start/end time clocks
+// (.timesets) are hidden, leaving the device-dark checkbox visible.
+function toggleSubOptionsVisibility(option, isOn) {
+    const togglesWithSubOptions = ["gpa_calc", "assignments_due", "better_todo", "auto_dark"];
+    if (!togglesWithSubOptions.includes(option)) return;
+    const optionEl = document.getElementById(option);
+    if (!optionEl) return;
+    const subOptions = optionEl.parentElement.querySelector(":scope > .sub-options");
+    if (!subOptions) return;
+    if (option === "auto_dark") {
+        const timesets = subOptions.querySelector(".timesets");
+        if (timesets) timesets.style.display = isOn ? "" : "none";
+    } else {
+        subOptions.style.display = isOn ? "" : "none";
+    }
+}
+
 function setup() {
 
     const menu = {
@@ -428,6 +449,7 @@ function setup() {
 			"device_dark",
 			"relative_dues",
 			"card_overdues",
+			"equal_height_cards",
 			// "todo_overdues",
 			"gpa_calc_prepend",
 			"auto_dark",
@@ -563,10 +585,14 @@ function setup() {
                 if (option === "better_todo") {
                     toggleBetterTodoSubOptions(status);
                 }
+                toggleSubOptionsVisibility(option, status);
             });
         });
         toggleBetterSidebarSubOptions(sync["better_sidebar"] === true);
         toggleBetterTodoSubOptions(sync["better_todo"] === true);
+        ["gpa_calc", "assignments_due", "better_todo", "auto_dark"].forEach(opt => {
+            toggleSubOptionsVisibility(opt, sync[opt] === true);
+        });
     });
 
     chrome.storage.sync.get(menu.checkboxes, sync => {