diff --git a/apps/desktop/src/components/structure/TableStructureEditorDialog.vue b/apps/desktop/src/components/structure/TableStructureEditorDialog.vue
index 0c42bf8889..0a52453c61 100644
--- a/apps/desktop/src/components/structure/TableStructureEditorDialog.vue
+++ b/apps/desktop/src/components/structure/TableStructureEditorDialog.vue
@@ -74,7 +74,7 @@ const indexes = ref<EditableStructureIndex[]>([]);
 const foreignKeys = ref<ForeignKeyInfo[]>([]);
 const triggers = ref<TriggerInfo[]>([]);
 
-const indexColWidths = ref([160, 240, 80, 112, 160, 192, 160, 96]);
+const indexColWidths = ref([132, 200, 64, 96, 132, 160, 132, 76]);
 const resizing = ref<{ col: number; startX: number; startW: number } | null>(null);
 
 function onIndexColResize(e: MouseEvent, col: number) {
@@ -379,7 +379,11 @@ watch(
 
 <template>
   <Dialog v-model:open="open">
-    <DialogScrollContent class="sm:max-w-[1180px]" :trap-focus="false" @interact-outside.prevent>
+    <DialogScrollContent
+      class="max-h-[calc(100vh-32px)] gap-3 p-3 sm:max-w-[1180px]"
+      :trap-focus="false"
+      @interact-outside.prevent
+    >
       <DialogHeader>
         <DialogTitle class="flex items-center gap-2">
           <TableProperties class="h-4 w-4" />
@@ -387,8 +391,8 @@ watch(
         </DialogTitle>
       </DialogHeader>
 
-      <div class="space-y-3 py-2">
-        <div class="flex items-center gap-2 rounded-md border bg-muted/20 px-3 py-2 text-xs">
+      <div class="space-y-2 py-1 text-[11px]" data-structure-density="compact">
+        <div class="flex items-center gap-2 rounded-md border bg-muted/20 px-2.5 py-1.5 text-[11px]">
           <Database class="h-3.5 w-3.5 text-muted-foreground" />
           <span class="min-w-0 flex-1 truncate font-medium">{{ targetLabel || t("editor.noDatabase") }}</span>
           <Badge variant="outline">{{ connection?.driver_label || databaseType }}</Badge>
@@ -396,7 +400,7 @@ watch(
             v-if="!isCreateMode"
             variant="ghost"
             size="sm"
-            class="h-7 gap-1"
+            class="h-6 gap-1 px-2 text-[11px]"
             :disabled="loading || saving"
             @click="loadStructure"
           >
@@ -405,12 +409,14 @@ watch(
           </Button>
         </div>
 
-        <div v-if="isCreateMode" class="flex items-center gap-3">
-          <label class="text-xs font-medium text-muted-foreground shrink-0">{{ t("structureEditor.tableName") }}</label>
+        <div v-if="isCreateMode" class="flex items-center gap-2">
+          <label class="shrink-0 text-[11px] font-medium text-muted-foreground">{{
+            t("structureEditor.tableName")
+          }}</label>
           <Input
             v-model="newTableName"
             :placeholder="t('contextMenu.duplicateNamePlaceholder')"
-            class="h-7 text-xs max-w-[240px]"
+            class="h-6 max-w-[220px] text-[11px]"
           />
         </div>
 
@@ -419,10 +425,10 @@ watch(
           {{ t("common.loading") }}
         </div>
 
-        <div v-else class="grid min-h-[520px] grid-cols-[minmax(0,1fr)_360px] gap-3">
+        <div v-else class="grid min-h-[520px] grid-cols-[minmax(0,1fr)_300px] gap-2">
           <div class="min-w-0 rounded-md border">
             <Tabs v-model="activeTab" class="flex h-full flex-col">
-              <div class="flex items-center justify-between border-b px-3 py-2">
+              <div class="flex items-center justify-between border-b px-2 py-1.5">
                 <TabsList>
                   <TabsTrigger value="columns">{{ t("structureEditor.columns") }}</TabsTrigger>
                   <TabsTrigger value="indexes">{{ t("structureEditor.indexes") }}</TabsTrigger>
@@ -432,7 +438,7 @@ watch(
                 <Button
                   v-if="activeTab === 'columns'"
                   size="sm"
-                  class="h-7 gap-1"
+                  class="h-6 gap-1 px-2 text-[11px]"
                   :disabled="!structureCapabilities.addColumn"
                   @click="addColumn"
                 >
@@ -442,7 +448,7 @@ watch(
                 <Button
                   v-if="activeTab === 'indexes'"
                   size="sm"
-                  class="h-7 gap-1"
+                  class="h-6 gap-1 px-2 text-[11px]"
                   :disabled="!structureCapabilities.createIndex"
                   @click="addIndex"
                 >
@@ -452,26 +458,26 @@ watch(
               </div>
 
               <TabsContent value="columns" class="m-0 min-h-0 flex-1 overflow-auto p-0">
-                <table class="min-w-full border-separate border-spacing-0 text-xs">
+                <table class="min-w-full border-separate border-spacing-0 text-[11px]">
                   <thead class="sticky top-0 z-10 bg-background">
                     <tr>
-                      <th class="w-8 border-b border-r px-2 py-2 text-left">#</th>
-                      <th class="min-w-36 border-b border-r px-2 py-2 text-left">
+                      <th class="w-7 border-b border-r px-1.5 py-1.5 text-left">#</th>
+                      <th class="min-w-32 border-b border-r px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.columnName") }}
                       </th>
-                      <th class="min-w-40 border-b border-r px-2 py-2 text-left">
+                      <th class="min-w-36 border-b border-r px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.dataType") }}
                       </th>
-                      <th class="w-20 whitespace-nowrap border-b border-r px-2 py-2 text-left">
+                      <th class="w-16 whitespace-nowrap border-b border-r px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.nullable") }}
                       </th>
-                      <th class="min-w-32 border-b border-r px-2 py-2 text-left">
+                      <th class="min-w-28 border-b border-r px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.defaultValue") }}
                       </th>
-                      <th class="min-w-36 border-b border-r px-2 py-2 text-left">
+                      <th class="min-w-32 border-b border-r px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.comment") }}
                       </th>
-                      <th class="w-40 border-b px-2 py-2 text-left">
+                      <th class="w-32 border-b px-1.5 py-1.5 text-left">
                         {{ t("structureEditor.actions") }}
                       </th>
                     </tr>
@@ -482,27 +488,27 @@ watch(
                       :key="column.id"
                       :class="column.markedForDrop ? 'bg-destructive/5 opacity-60' : ''"
                     >
-                      <td class="border-b border-r px-2 py-1.5 text-muted-foreground">
+                      <td class="border-b border-r px-1.5 py-1 text-muted-foreground">
                         <div class="flex items-center gap-1">
                           <span>{{ index + 1 }}</span>
                           <KeyRound v-if="column.isPrimaryKey" class="h-3 w-3 text-amber-500" />
                         </div>
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <Input
                           v-model="column.name"
-                          class="h-7 min-w-32 text-xs"
+                          class="h-6 min-w-28 text-[11px]"
                           :disabled="isColumnNameDisabled(column)"
                         />
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <Input
                           v-model="column.dataType"
-                          class="h-7 min-w-36 font-mono text-xs"
+                          class="h-6 min-w-32 font-mono text-[11px]"
                           :disabled="isColumnTypeDisabled(column)"
                         />
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <label class="flex items-center gap-1.5">
                           <input
                             v-model="column.isNullable"
@@ -513,18 +519,18 @@ watch(
                           <span>{{ column.isNullable ? t("structureEditor.yes") : t("structureEditor.no") }}</span>
                         </label>
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <Input
                           v-model="column.defaultValue"
-                          class="h-7 min-w-28 font-mono text-xs"
+                          class="h-6 min-w-24 font-mono text-[11px]"
                           :disabled="isColumnDefaultDisabled(column)"
                         />
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
-                        <div class="flex min-w-44 items-center gap-1">
+                      <td class="border-b border-r px-1.5 py-1">
+                        <div class="flex min-w-36 items-center gap-1">
                           <Input
                             v-model="column.comment"
-                            class="h-7 min-w-0 flex-1 text-xs"
+                            class="h-6 min-w-0 flex-1 text-[11px]"
                             :disabled="isColumnCommentDisabled(column)"
                           />
                           <Popover>
@@ -532,7 +538,7 @@ watch(
                               <Button
                                 variant="ghost"
                                 size="icon"
-                                class="h-7 w-7 shrink-0"
+                                class="h-6 w-6 shrink-0"
                                 :disabled="isColumnCommentDisabled(column)"
                                 :aria-label="t('structureEditor.editComment')"
                                 :title="t('structureEditor.editComment')"
@@ -559,12 +565,12 @@ watch(
                           </Popover>
                         </div>
                       </td>
-                      <td class="border-b px-2 py-1.5">
+                      <td class="border-b px-1.5 py-1">
                         <div class="flex items-center gap-1">
                           <Button
                             variant="ghost"
                             size="icon"
-                            class="h-7 w-7"
+                            class="h-6 w-6"
                             :disabled="!canMoveColumn(index, -1)"
                             :title="t('structureEditor.moveColumnUp')"
                             :aria-label="t('structureEditor.moveColumnUp')"
@@ -575,7 +581,7 @@ watch(
                           <Button
                             variant="ghost"
                             size="icon"
-                            class="h-7 w-7"
+                            class="h-6 w-6"
                             :disabled="!canMoveColumn(index, 1)"
                             :title="t('structureEditor.moveColumnDown')"
                             :aria-label="t('structureEditor.moveColumnDown')"
@@ -587,14 +593,20 @@ watch(
                             v-if="column.original"
                             variant="ghost"
                             size="sm"
-                            class="h-7 gap-1"
+                            class="h-6 gap-1 px-1.5 text-[11px]"
                             :disabled="!canDropColumn(column)"
                             @click="toggleDropColumn(column)"
                           >
                             <Trash2 class="h-3.5 w-3.5" />
                             {{ column.markedForDrop ? t("structureEditor.restore") : t("structureEditor.drop") }}
                           </Button>
-                          <Button v-else variant="ghost" size="sm" class="h-7 gap-1" @click="removeNewColumn(column)">
+                          <Button
+                            v-else
+                            variant="ghost"
+                            size="sm"
+                            class="h-6 gap-1 px-1.5 text-[11px]"
+                            @click="removeNewColumn(column)"
+                          >
                             <X class="h-3.5 w-3.5" />
                             {{ t("structureEditor.remove") }}
                           </Button>
@@ -606,13 +618,13 @@ watch(
               </TabsContent>
 
               <TabsContent value="indexes" class="m-0 min-h-0 flex-1 overflow-auto p-0">
-                <table class="min-w-full border-separate border-spacing-0 text-xs">
+                <table class="min-w-full border-separate border-spacing-0 text-[11px]">
                   <thead class="sticky top-0 z-10 bg-background">
                     <tr>
                       <th
                         v-for="(label, i) in indexColLabels"
                         :key="i"
-                        class="relative border-b border-r px-2 py-2 text-left"
+                        class="relative border-b border-r px-1.5 py-1.5 text-left"
                         :style="{
                           width: indexColWidths[i] + 'px',
                           minWidth: indexColWidths[i] + 'px',
@@ -634,13 +646,13 @@ watch(
                       :key="index.id"
                       :class="index.markedForDrop ? 'bg-destructive/5 opacity-60' : ''"
                     >
-                      <td class="border-b border-r px-2 py-1.5">
-                        <Input v-model="index.name" class="h-7 text-xs" :disabled="!canEditIndexDraft(index)" />
+                      <td class="border-b border-r px-1.5 py-1">
+                        <Input v-model="index.name" class="h-6 text-[11px]" :disabled="!canEditIndexDraft(index)" />
                       </td>
-                      <td class="overflow-hidden border-b border-r px-2 py-1.5">
+                      <td class="overflow-hidden border-b border-r px-1.5 py-1">
                         <DropdownMenu v-if="canEditIndexDraft(index)">
                           <DropdownMenuTrigger as-child>
-                            <Button variant="outline" class="h-7 w-full justify-between font-mono text-xs">
+                            <Button variant="outline" class="h-6 w-full justify-between px-2 font-mono text-[11px]">
                               <span class="truncate">{{
                                 toColumnNames(index.columns) || t("structureEditor.indexColumnsPlaceholder")
                               }}</span>
@@ -648,7 +660,7 @@ watch(
                             </Button>
                           </DropdownMenuTrigger>
                           <DropdownMenuContent
-                            class="max-h-60 min-w-48 overflow-y-auto"
+                            class="max-h-56 min-w-44 overflow-y-auto"
                             side="bottom"
                             :side-offset="2"
                             :avoid-collisions="false"
@@ -657,7 +669,7 @@ watch(
                             <div class="px-1.5 pb-1 pt-0.5">
                               <Input
                                 v-model="colSearch"
-                                class="h-6 text-xs"
+                                class="h-6 text-[11px]"
                                 :placeholder="t('grid.search')"
                                 @click.stop
                               />
@@ -674,11 +686,11 @@ watch(
                             </DropdownMenuCheckboxItem>
                           </DropdownMenuContent>
                         </DropdownMenu>
-                        <span v-else class="font-mono text-xs text-muted-foreground">{{
+                        <span v-else class="font-mono text-[11px] text-muted-foreground">{{
                           toColumnNames(index.columns)
                         }}</span>
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <label class="flex items-center gap-1.5">
                           <input
                             v-model="index.isUnique"
@@ -689,14 +701,14 @@ watch(
                           <span>{{ index.isUnique ? t("structureEditor.yes") : t("structureEditor.no") }}</span>
                         </label>
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <Select
                           v-if="indexTypeOptions.length > 0"
                           :model-value="index.indexType || 'BTREE'"
                           :disabled="!canEditIndexDraft(index)"
                           @update:model-value="(v: any) => (index.indexType = String(v ?? ''))"
                         >
-                          <SelectTrigger class="h-7 font-mono text-xs">
+                          <SelectTrigger class="h-6 font-mono text-[11px]">
                             <SelectValue />
                           </SelectTrigger>
                           <SelectContent>
@@ -706,15 +718,15 @@ watch(
                         <Input
                           v-else
                           v-model="index.indexType"
-                          class="h-7 font-mono text-xs"
+                          class="h-6 font-mono text-[11px]"
                           placeholder="BTREE"
                           :disabled="!canEditIndexDraft(index) || !structureCapabilities.indexType"
                         />
                       </td>
-                      <td class="overflow-hidden border-b border-r px-2 py-1.5">
+                      <td class="overflow-hidden border-b border-r px-1.5 py-1">
                         <DropdownMenu v-if="canEditIndexDraft(index) && structureCapabilities.indexInclude">
                           <DropdownMenuTrigger as-child>
-                            <Button variant="outline" class="h-7 w-full justify-between font-mono text-xs">
+                            <Button variant="outline" class="h-6 w-full justify-between px-2 font-mono text-[11px]">
                               <span class="truncate">{{
                                 index.includedColumns.join(", ") || t("structureEditor.includedColumnsPlaceholder")
                               }}</span>
@@ -722,7 +734,7 @@ watch(
                             </Button>
                           </DropdownMenuTrigger>
                           <DropdownMenuContent
-                            class="max-h-60 min-w-48 overflow-y-auto"
+                            class="max-h-56 min-w-44 overflow-y-auto"
                             side="bottom"
                             :side-offset="2"
                             :avoid-collisions="false"
@@ -731,7 +743,7 @@ watch(
                             <div class="px-1.5 pb-1 pt-0.5">
                               <Input
                                 v-model="colSearch"
-                                class="h-6 text-xs"
+                                class="h-6 text-[11px]"
                                 :placeholder="t('grid.search')"
                                 @click.stop
                               />
@@ -748,33 +760,45 @@ watch(
                             </DropdownMenuCheckboxItem>
                           </DropdownMenuContent>
                         </DropdownMenu>
-                        <span v-else class="text-muted-foreground text-xs">{{ index.includedColumns.join(", ") }}</span>
+                        <span v-else class="text-[11px] text-muted-foreground">{{
+                          index.includedColumns.join(", ")
+                        }}</span>
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
+                      <td class="border-b border-r px-1.5 py-1">
                         <Input
                           v-model="index.filter"
-                          class="h-7 font-mono text-xs"
+                          class="h-6 font-mono text-[11px]"
                           :placeholder="index.original?.filter || ''"
                           :disabled="!canEditIndexFilter(index)"
                         />
                       </td>
-                      <td class="border-b border-r px-2 py-1.5">
-                        <Input v-model="index.comment" class="h-7 text-xs" :disabled="!canEditIndexComment(index)" />
+                      <td class="border-b border-r px-1.5 py-1">
+                        <Input
+                          v-model="index.comment"
+                          class="h-6 text-[11px]"
+                          :disabled="!canEditIndexComment(index)"
+                        />
                       </td>
-                      <td class="border-b px-2 py-1.5">
+                      <td class="border-b px-1.5 py-1">
                         <Badge v-if="index.isPrimary" variant="outline">{{ t("structureEditor.primary") }}</Badge>
                         <Button
                           v-else-if="index.original"
                           variant="ghost"
                           size="sm"
-                          class="h-7 gap-1"
+                          class="h-6 gap-1 px-1.5 text-[11px]"
                           :disabled="!canDropIndex(index)"
                           @click="toggleDropIndex(index)"
                         >
                           <Trash2 class="h-3.5 w-3.5" />
                           {{ index.markedForDrop ? t("structureEditor.restore") : t("structureEditor.drop") }}
                         </Button>
-                        <Button v-else variant="ghost" size="sm" class="h-7 gap-1" @click="removeNewIndex(index)">
+                        <Button
+                          v-else
+                          variant="ghost"
+                          size="sm"
+                          class="h-6 gap-1 px-1.5 text-[11px]"
+                          @click="removeNewIndex(index)"
+                        >
                           <X class="h-3.5 w-3.5" />
                           {{ t("structureEditor.remove") }}
                         </Button>
@@ -784,12 +808,12 @@ watch(
                 </table>
               </TabsContent>
 
-              <TabsContent value="foreignKeys" class="m-0 min-h-0 flex-1 overflow-auto p-3">
+              <TabsContent value="foreignKeys" class="m-0 min-h-0 flex-1 overflow-auto p-2">
                 <div v-if="foreignKeys.length === 0" class="py-10 text-center text-sm text-muted-foreground">
                   {{ t("structureEditor.emptyReadonly") }}
                 </div>
-                <div v-else class="space-y-2">
-                  <div v-for="fk in foreignKeys" :key="fk.name" class="rounded-md border px-3 py-2 text-xs">
+                <div v-else class="space-y-1.5">
+                  <div v-for="fk in foreignKeys" :key="fk.name" class="rounded-md border px-2 py-1.5 text-[11px]">
                     <div class="font-medium">{{ fk.name }}</div>
                     <div class="mt-1 font-mono text-muted-foreground">
                       {{ fk.column }} -> {{ fk.ref_table }}.{{ fk.ref_column }}
@@ -798,12 +822,16 @@ watch(
                 </div>
               </TabsContent>
 
-              <TabsContent value="triggers" class="m-0 min-h-0 flex-1 overflow-auto p-3">
+              <TabsContent value="triggers" class="m-0 min-h-0 flex-1 overflow-auto p-2">
                 <div v-if="triggers.length === 0" class="py-10 text-center text-sm text-muted-foreground">
                   {{ t("structureEditor.emptyReadonly") }}
                 </div>
-                <div v-else class="space-y-2">
-                  <div v-for="trigger in triggers" :key="trigger.name" class="rounded-md border px-3 py-2 text-xs">
+                <div v-else class="space-y-1.5">
+                  <div
+                    v-for="trigger in triggers"
+                    :key="trigger.name"
+                    class="rounded-md border px-2 py-1.5 text-[11px]"
+                  >
                     <div class="font-medium">{{ trigger.name }}</div>
                     <div class="mt-1 font-mono text-muted-foreground">{{ trigger.timing }} {{ trigger.event }}</div>
                   </div>
@@ -813,16 +841,16 @@ watch(
           </div>
 
           <div class="flex min-w-0 flex-col rounded-md border">
-            <div class="flex items-center justify-between border-b px-3 py-2 text-xs font-medium">
+            <div class="flex items-center justify-between border-b px-2 py-1.5 text-[11px] font-medium">
               <span>{{ t("structureEditor.sqlPreview") }}</span>
               <Badge variant="secondary">{{ pendingStatements.length }}</Badge>
             </div>
-            <div class="min-h-0 flex-1 overflow-auto p-3">
-              <div v-if="warnings.length" class="mb-3 space-y-1">
+            <div class="min-h-0 flex-1 overflow-auto p-2">
+              <div v-if="warnings.length" class="mb-2 space-y-1">
                 <div
                   v-for="warning in warnings"
                   :key="warning"
-                  class="flex gap-2 rounded-md border border-yellow-300/40 bg-yellow-500/10 px-2 py-1.5 text-xs text-yellow-700 dark:text-yellow-300"
+                  class="flex gap-1.5 rounded-md border border-yellow-300/40 bg-yellow-500/10 px-2 py-1 text-[11px] text-yellow-700 dark:text-yellow-300"
                 >
                   <AlertTriangle class="mt-0.5 h-3.5 w-3.5 shrink-0" />
                   <span>{{ warning }}</span>
@@ -830,7 +858,7 @@ watch(
               </div>
               <pre
                 v-if="pendingStatements.length"
-                class="whitespace-pre-wrap break-words rounded-md bg-muted/40 p-3 font-mono text-xs leading-5"
+                class="whitespace-pre-wrap break-words rounded-md bg-muted/40 p-2 font-mono text-[11px] leading-4"
                 >{{ pendingStatements.join("\n") }}</pre
               >
               <div v-else class="flex h-full items-center justify-center text-sm text-muted-foreground">
@@ -842,7 +870,7 @@ watch(
 
         <div
           v-if="errorMessage"
-          class="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-xs text-destructive"
+          class="rounded-md border border-destructive/30 bg-destructive/10 px-2.5 py-1.5 text-[11px] text-destructive"
         >
           {{ errorMessage }}
         </div>
diff --git a/packages/app-tests/tableStructureEditorPresentation.test.ts b/packages/app-tests/tableStructureEditorPresentation.test.ts
index 3af2505a03..ea1e05eaea 100644
--- a/packages/app-tests/tableStructureEditorPresentation.test.ts
+++ b/packages/app-tests/tableStructureEditorPresentation.test.ts
@@ -50,3 +50,11 @@ test("structure editor exposes column order controls", () => {
   assert.match(source, /t\(['"]structureEditor\.moveColumnUp['"]\)/);
   assert.match(source, /t\(['"]structureEditor\.moveColumnDown['"]\)/);
 });
+
+test("structure editor uses a dense wide layout for large tables", () => {
+  assert.match(source, /sm:max-w-\[1180px\]/);
+  assert.doesNotMatch(source, /1500px/);
+  assert.match(source, /grid-cols-\[minmax\(0,1fr\)_300px\]/);
+  assert.match(source, /data-structure-density="compact"/);
+  assert.match(source, /class="h-6 min-w-28 text-\[11px\]"/);
+});