diff --git a/apps/docs/docs/getting-started/after-the-installation.mdx b/apps/docs/docs/getting-started/after-the-installation.mdx
index 4eeeb7946..6fbb301d0 100644
--- a/apps/docs/docs/getting-started/after-the-installation.mdx
+++ b/apps/docs/docs/getting-started/after-the-installation.mdx
@@ -203,6 +203,8 @@ In the modal you can edit the app that you want to display:
   </figcaption>
 </figure>
 
+When adding a widget, set its initial grid width and height directly in the preview. These size controls are only shown before the widget is added.
+
 As soon as you save your changes, the tile on the board will refresh and display your app.
 Resize from any visible edge or corner handle. For a Container, activate its top-left grip before using its resize handles.
 Press and hold a handle, move the pointer, and release it when the tile has the size you want.
diff --git a/apps/nextjs/src/components/board/items/item-select-modal.tsx b/apps/nextjs/src/components/board/items/item-select-modal.tsx
index cb2f6913b..24dee4e5e 100644
--- a/apps/nextjs/src/components/board/items/item-select-modal.tsx
+++ b/apps/nextjs/src/components/board/items/item-select-modal.tsx
@@ -30,6 +30,7 @@ import {
   getIntegrationName,
   getWidgetName,
   getRootSectionLane,
+  widgetDefaultSizes,
   widgetIntegrationSupport,
   widgetKinds,
   widgetKindsWithOptionalIntegrations,
@@ -47,6 +48,7 @@ import { loadWidgetDefinition, reduceWidgetOptionsWithDefinition } from "@homarr
 import type { EmptySection } from "~/app/[locale]/boards/_types";
 import { useSetupAnalytics } from "~/components/create/setup-analytics";
 import { IntegrationSelectModal } from "~/components/integration/integration-select-modal";
+import { getSectionGridColumnCount } from "../sections/grid/section-grid-placements";
 import { useItemActions } from "./item-actions";
 import type { WidgetConnectionStatus } from "./item-select-data";
 import {
@@ -76,6 +78,8 @@ export interface WidgetItemData {
 }
 
 const selectGridCols = { base: 1, xs: 2, sm: 2, md: 3, lg: 4 };
+const defaultWidgetSize = { width: 1, height: 1 };
+const maximumWidgetHeight = 64;
 
 const ItemSelectModalContent = ({
   actions,
@@ -124,6 +128,13 @@ const ItemSelectModalContent = ({
   const effectiveSectionId = placementOptions.some(({ value }) => value === targetSectionId)
     ? targetSectionId
     : (placementOptions[0]?.value ?? null);
+  const maximumWidgetSize = useMemo(() => {
+    if (!effectiveSectionId) return defaultWidgetSize;
+    return {
+      width: Math.max(1, getSectionGridColumnCount(board, currentLayoutId, effectiveSectionId) ?? 1),
+      height: maximumWidgetHeight,
+    };
+  }, [board, currentLayoutId, effectiveSectionId]);
 
   const [loadingSelection, setLoadingSelection] = useState<string | null>(null);
   const selectionLock = useRef(false);
@@ -246,6 +257,7 @@ const ItemSelectModalContent = ({
     try {
       const definition = await loadWidgetDefinition("customApi");
       const itemId = createId();
+      const initialSize = widgetDefaultSizes.customApi ?? defaultWidgetSize;
       const defaultOptions = reduceWidgetOptionsWithDefinition(definition, settings);
       const options = {
         ...defaultOptions,
@@ -263,7 +275,7 @@ const ItemSelectModalContent = ({
             options,
             integrationIds: [],
           },
-          onSuccessfulEdit: ({ options: configuredOptions, advancedOptions }) => {
+          onSuccessfulEdit: ({ options: configuredOptions, advancedOptions }, selectedSize) => {
             const updatedBoard = createItem({
               id: itemId,
               kind: "customApi",
@@ -271,12 +283,14 @@ const ItemSelectModalContent = ({
               options: configuredOptions,
               targetSectionId: effectiveSectionId ?? undefined,
               advancedOptions,
+              size: selectedSize ?? initialSize,
             });
             notifyCreated(updatedBoard, itemId, customWidgetDefinition.name);
           },
           integrationData: [],
           integrationSupport: false,
           settings,
+          previewResize: { initialSize, maximumSize: maximumWidgetSize },
         },
         {
           title: (titleT) => `${titleT("item.edit.title")} - ${customWidgetDefinition.name}`,
@@ -311,6 +325,7 @@ const ItemSelectModalContent = ({
       const matchingIntegrationCount = Math.min(matchingIntegrations.length, maxIntegrations);
       const itemId = createId();
       const defaultOptions = reduceWidgetOptionsWithDefinition(definition, settings);
+      const initialSize = widgetDefaultSizes[kind] ?? defaultWidgetSize;
       const openEditor = (
         availableIntegrations: { id: string; name: string; url: string; kind: IntegrationKind }[],
       ) => {
@@ -326,7 +341,7 @@ const ItemSelectModalContent = ({
               options: defaultOptions,
               integrationIds: selectedIntegrationIds,
             },
-            onSuccessfulEdit: ({ options, integrationIds: newIntegrationIds, advancedOptions }) => {
+            onSuccessfulEdit: ({ options, integrationIds: newIntegrationIds, advancedOptions }, selectedSize) => {
               const updatedBoard = createItem({
                 id: itemId,
                 kind,
@@ -334,6 +349,7 @@ const ItemSelectModalContent = ({
                 integrationIds: newIntegrationIds,
                 targetSectionId: effectiveSectionId ?? undefined,
                 advancedOptions,
+                size: selectedSize ?? initialSize,
               });
               if (!notifyCreated(updatedBoard, itemId, getWidgetName(kind, t))) return;
               trackSetup("widget-completed", {
@@ -346,6 +362,7 @@ const ItemSelectModalContent = ({
             integrationData: availableIntegrations,
             integrationSupport: hasIntegrationSupport,
             settings,
+            previewResize: { initialSize, maximumSize: maximumWidgetSize },
           },
           {
             title: (titleT) => `${titleT("item.edit.title")} - ${getWidgetName(kind, titleT)}`,
diff --git a/apps/nextjs/src/components/board/items/lazy-widget-edit-modal.tsx b/apps/nextjs/src/components/board/items/lazy-widget-edit-modal.tsx
index 53d601561..9e80607e6 100644
--- a/apps/nextjs/src/components/board/items/lazy-widget-edit-modal.tsx
+++ b/apps/nextjs/src/components/board/items/lazy-widget-edit-modal.tsx
@@ -12,7 +12,7 @@ import { widgetDefaultSizes } from "@homarr/definitions";
 import { createModal, useModalAction } from "@homarr/modals";
 import { WidgetError } from "@homarr/widgets/errors";
 import type * as WidgetModalsModule from "@homarr/widgets/modals";
-import type { WidgetEditModalProps } from "@homarr/widgets/modals";
+import type { WidgetEditModalProps, WidgetEditModalSize } from "@homarr/widgets/modals";
 import { loadWidgetComponent } from "@homarr/widgets/manifest";
 import type { IntegrationSelectOption } from "@homarr/widgets/widget-integration-select";
 
@@ -26,6 +26,10 @@ const defaultWidgetSize = { width: 1, height: 1 };
 const ignoreAssistantAction = () => undefined;
 const ignoreAssistantPrompt = () => false;
 const ignoreAssistantRefresh = () => Promise.resolve();
+const getPreviewDimensions = (size: WidgetEditModalSize) => ({
+  width: getLogicalTrackSize(size.width),
+  height: getLogicalTrackSize(size.height),
+});
 
 const PreviewRuntimeWrapper = ({ children }: PropsWithChildren) => {
   const assistant = useOptionalHomarrAssistant();
@@ -153,6 +157,10 @@ const LazyWidgetEditModalContent = (props: LazyWidgetEditModalContentProps) => {
       height: getLogicalTrackSize(size.height),
     };
   }, [props.innerProps.kind, props.innerProps.previewDimensions]);
+  let previewResize = props.innerProps.previewResize;
+  if (previewResize) {
+    previewResize = { ...previewResize, getDimensions: getPreviewDimensions };
+  }
 
   return (
     <Component
@@ -163,6 +171,7 @@ const LazyWidgetEditModalContent = (props: LazyWidgetEditModalContentProps) => {
         integrationEditForm: LazyIntegrationEditForm,
         previewComponent: PreviewComponent,
         previewDimensions,
+        previewResize,
         previewWrapper: PreviewRuntimeWrapper,
         onOpenNewIntegration: supportedKinds.length > 0 ? handleOpenNewIntegration : undefined,
       }}
diff --git a/packages/translation/src/lang/en.json b/packages/translation/src/lang/en.json
index 0ec728a56..bba46c6e7 100644
--- a/packages/translation/src/lang/en.json
+++ b/packages/translation/src/lang/en.json
@@ -2116,7 +2116,8 @@
         "loadError": "This integration could not be loaded. Try again before changing its connection settings."
       },
       "preview": {
-        "integrationRequired": "Choose a connection to preview this widget."
+        "integrationRequired": "Choose a connection to preview this widget.",
+        "size": "Size"
       },
       "settings": {
         "label": "Widget settings"
diff --git a/packages/widgets/src/modals/widget-edit-modal.module.css b/packages/widgets/src/modals/widget-edit-modal.module.css
index 7c6793542..6dcc2d579 100644
--- a/packages/widgets/src/modals/widget-edit-modal.module.css
+++ b/packages/widgets/src/modals/widget-edit-modal.module.css
@@ -26,6 +26,24 @@
   pointer-events: none;
 }
 
+.previewSizeControls {
+  position: absolute;
+  z-index: 3;
+  top: var(--mantine-spacing-xs);
+  left: var(--mantine-spacing-xs);
+  padding: 0.25rem 0.375rem;
+  border: 1px solid var(--mantine-color-default-border);
+  border-radius: var(--mantine-radius-sm);
+  background: color-mix(in srgb, var(--mantine-color-body) 92%, transparent);
+  box-shadow: var(--mantine-shadow-xs);
+  backdrop-filter: blur(8px);
+}
+
+.previewSizeInput {
+  width: 5rem;
+  font-variant-numeric: tabular-nums;
+}
+
 .previewCanvas {
   position: relative;
   width: 100%;
diff --git a/packages/widgets/src/modals/widget-edit-modal.tsx b/packages/widgets/src/modals/widget-edit-modal.tsx
index d45fc2f60..98d52c1eb 100644
--- a/packages/widgets/src/modals/widget-edit-modal.tsx
+++ b/packages/widgets/src/modals/widget-edit-modal.tsx
@@ -4,7 +4,21 @@
 
 import { useEffect, useId, useRef, useState } from "react";
 import type { ComponentType, FormEvent, PropsWithChildren } from "react";
-import { Alert, Badge, Box, Button, Center, Divider, Group, SimpleGrid, Stack, Tabs, Text } from "@mantine/core";
+import {
+  Alert,
+  Badge,
+  Box,
+  Button,
+  Center,
+  Divider,
+  Group,
+  NumberInput,
+  SimpleGrid,
+  Stack,
+  Tabs,
+  Text,
+  Tooltip,
+} from "@mantine/core";
 import { schemaResolver } from "@mantine/form";
 import { useElementSize } from "@mantine/hooks";
 import { IconArrowLeft, IconEye, IconPencil, IconSettings } from "@tabler/icons-react";
@@ -44,6 +58,17 @@ export interface WidgetEditModalState {
   advancedOptions: BoardItemAdvancedOptions;
 }
 
+export interface WidgetEditModalSize {
+  width: number;
+  height: number;
+}
+
+interface WidgetEditPreviewResizeOptions {
+  initialSize: WidgetEditModalSize;
+  maximumSize: WidgetEditModalSize;
+  getDimensions?: (size: WidgetEditModalSize) => { width: number; height: number; scale?: number };
+}
+
 export interface EmbeddedIntegrationEditFormHandle {
   submitIfDirty: () => Promise<boolean>;
 }
@@ -58,7 +83,7 @@ export interface WidgetEditModalProps<TSort extends WidgetKind> {
   kind: TSort;
   definition: WidgetDefinition;
   value: WidgetEditModalState;
-  onSuccessfulEdit: (value: WidgetEditModalState) => void;
+  onSuccessfulEdit: (value: WidgetEditModalState, size?: WidgetEditModalSize) => void;
   integrationData: IntegrationSelectOption[];
   integrationSupport: boolean;
   settings: SettingsContextProps;
@@ -70,6 +95,7 @@ export interface WidgetEditModalProps<TSort extends WidgetKind> {
   onOpenNewIntegration?: (onCreated?: (id: string) => void) => void;
   previewComponent?: ComponentType<WidgetComponentProps<TSort>>;
   previewDimensions?: { width: number; height: number; scale?: number };
+  previewResize?: WidgetEditPreviewResizeOptions;
   previewWrapper?: ComponentType<PropsWithChildren>;
 }
 
@@ -83,6 +109,11 @@ interface WidgetEditPreviewProps {
   dimensions?: { width: number; height: number; scale?: number };
   integrationData: IntegrationSelectOption[];
   onChangeOptions: (newOptions: Record<string, unknown>) => void;
+  resize?: {
+    size: WidgetEditModalSize;
+    maximumSize: WidgetEditModalSize;
+    onChange: (size: WidgetEditModalSize) => void;
+  };
   PreviewWrapper?: ComponentType<PropsWithChildren>;
 }
 
@@ -94,6 +125,11 @@ const PreviewRuntimeBoundary = ({
   return <Wrapper>{children}</Wrapper>;
 };
 
+const normalizePreviewSize = (size: WidgetEditModalSize, maximumSize: WidgetEditModalSize): WidgetEditModalSize => ({
+  width: Math.max(1, Math.min(Math.round(size.width), maximumSize.width)),
+  height: Math.max(1, Math.min(Math.round(size.height), maximumSize.height)),
+});
+
 const WidgetEditPreview = ({
   kind,
   Component,
@@ -104,8 +140,10 @@ const WidgetEditPreview = ({
   dimensions = { width: 400, height: 240 },
   integrationData,
   onChangeOptions,
+  resize,
   PreviewWrapper,
 }: WidgetEditPreviewProps) => {
+  const t = useI18n();
   const tItem = useI18n("item.edit");
   const board = useOptionalBoard();
   const generatedPreviewId = useId().replaceAll(":", "");
@@ -139,10 +177,66 @@ const WidgetEditPreview = ({
   if (kind === "assistant") componentItemId = `widget-preview-${generatedPreviewId}`;
   const isPendingCustomWidget = kind === "customApi" && !itemId;
   const previewOpacity = (board?.opacity ?? 100) / 100;
+  const handleResizeValue = (dimension: keyof WidgetEditModalSize, value: string | number) => {
+    if (typeof value !== "number" || !Number.isFinite(value) || !resize) return;
+    resize.onChange(
+      normalizePreviewSize(
+        {
+          ...resize.size,
+          [dimension]: value,
+        },
+        resize.maximumSize,
+      ),
+    );
+  };
 
   return (
     <Stack className={classes.previewPanel} gap={0}>
       <Center ref={ref} className={classes.previewCanvas}>
+        {resize && (
+          <Group className={classes.previewSizeControls} gap={6} wrap="nowrap">
+            <Text size="xs" fw={600} c="dimmed">
+              {tItem("preview.size")}
+            </Text>
+            <Tooltip label={t("item.moveResize.field.width.label")}>
+              <NumberInput
+                className={classes.previewSizeInput}
+                aria-label={t("item.moveResize.field.width.label")}
+                value={resize.size.width}
+                onChange={(value) => handleResizeValue("width", value)}
+                min={1}
+                max={resize.maximumSize.width}
+                step={1}
+                allowDecimal={false}
+                allowNegative={false}
+                clampBehavior="strict"
+                size="xs"
+                leftSection="W"
+                leftSectionPointerEvents="none"
+              />
+            </Tooltip>
+            <Text size="xs" c="dimmed" aria-hidden>
+              ×
+            </Text>
+            <Tooltip label={t("item.moveResize.field.height.label")}>
+              <NumberInput
+                className={classes.previewSizeInput}
+                aria-label={t("item.moveResize.field.height.label")}
+                value={resize.size.height}
+                onChange={(value) => handleResizeValue("height", value)}
+                min={1}
+                max={resize.maximumSize.height}
+                step={1}
+                allowDecimal={false}
+                allowNegative={false}
+                clampBehavior="strict"
+                size="xs"
+                leftSection="H"
+                leftSectionPointerEvents="none"
+              />
+            </Tooltip>
+          </Group>
+        )}
         <Badge className={classes.previewDimensions} size="xs" variant="light" color="gray">
           {Math.round(sourceWidth)} × {Math.round(sourceHeight)}
         </Badge>
@@ -228,6 +322,11 @@ export const WidgetEditModal = createModal<WidgetEditModalProps<WidgetKind>>(({
   const [mountedIntegrationIds, setMountedIntegrationIds] = useState<string[]>([]);
   const [activeIntegrationId, setActiveIntegrationId] = useState<string | null>(null);
   const [isSubmitting, setIsSubmitting] = useState(false);
+  const [previewSize, setPreviewSize] = useState<WidgetEditModalSize | null>(() => {
+    const resize = innerProps.previewResize;
+    if (!resize) return null;
+    return normalizePreviewSize(resize.initialSize, resize.maximumSize);
+  });
   const widgetFormId = useId();
 
   z.config({
@@ -354,10 +453,13 @@ export const WidgetEditModal = createModal<WidgetEditModalProps<WidgetKind>>(({
         }
       }
 
-      innerProps.onSuccessfulEdit({
-        ...values,
-        advancedOptions,
-      });
+      innerProps.onSuccessfulEdit(
+        {
+          ...values,
+          advancedOptions,
+        },
+        previewSize ?? undefined,
+      );
       actions.closeModal();
     } finally {
       setIsSubmitting(false);
@@ -400,6 +502,17 @@ export const WidgetEditModal = createModal<WidgetEditModalProps<WidgetKind>>(({
   const switchOptions = visibleOptions.filter(([, value]) => value.type === "switch");
   const otherOptions = visibleOptions.filter(([, value]) => value.type !== "switch");
   const hasWidgetSettings = canConfigureWidget && (innerProps.integrationSupport || visibleOptions.length > 0);
+  const previewResize = innerProps.previewResize;
+  let previewDimensions = innerProps.previewDimensions;
+  let resizeControls: WidgetEditPreviewProps["resize"];
+  if (previewSize && previewResize?.getDimensions) {
+    previewDimensions = previewResize.getDimensions(previewSize);
+    resizeControls = {
+      size: previewSize,
+      maximumSize: previewResize.maximumSize,
+      onChange: setPreviewSize,
+    };
+  }
 
   const widgetFormContent = (
     <Box
@@ -415,9 +528,10 @@ export const WidgetEditModal = createModal<WidgetEditModalProps<WidgetKind>>(({
           state={{ ...form.values, advancedOptions }}
           itemId={innerProps.itemId}
           boardId={innerProps.boardId ?? board?.id}
-          dimensions={innerProps.previewDimensions}
+          dimensions={previewDimensions}
           integrationData={innerProps.integrationData}
           onChangeOptions={handlePreviewOptionsChange}
+          resize={resizeControls}
           PreviewWrapper={innerProps.previewWrapper}
         />
       )}