Migrate to Polaris

Version 2025-07 is the last API version to support React-based UI components. Later versions use web components, native UI elements with built-in accessibility, better performance, and consistent styling with Shopify's design system. Check out the migration guide to upgrade your extension.

Choose a version:

InlineLayout

The InlineLayout component arranges content over multiple columns with explicit control over column sizing. Use InlineLayout to create horizontal layouts where each column can have a specific width or proportion, such as a sidebar next to a main content area.

InlineLayout supports flexible column configurations, gap spacing, and alignment properties. Content doesn't wrap to new rows—extra children are added as new columns that fill the remaining inline space. For simple horizontal arrangements where elements wrap naturally, use InlineStack. For row-based vertical layouts, use BlockLayout.

Support

Targets (25)

Supported targets

Anchor to PropertiesProperties

Configure the following properties on the InlineLayout component.

Anchor to accessibilityLabel accessibilityLabel string: A label announced by assistive technologies that describes the purpose or contents of the element. Only set this when the element's visible content doesn't provide enough context on its own.
Anchor to accessibilityRole accessibilityRole: The semantic meaning of the component's content. When set, assistive technologies use this role to help users navigate the page. Accepts a single role or a tuple of two roles (for example, ['listItem', 'separator']).
Anchor to background background <> Default: 'transparent': The background color of the element, set using a design-system keyword.
Anchor to blockAlignment blockAlignment <>: The alignment of children along the block (cross) axis.
Anchor to border border <<>>: The border style of the element. Accepts a single value for all four edges, or a shorthand tuple for per-edge control:

'base': Applies base to all edges.

['base', 'none']: Block edges get base, inline edges get none.

['base', 'none', 'dotted', 'base']: Values apply to block-start, inline-end, block-end, and inline-start respectively.
Anchor to borderWidth borderWidth < <> >: The border width of the element. Accepts a single value for all four edges, or a shorthand tuple for per-edge control:

'base': Applies base to all edges.

['base', 'medium']: Block edges get base, inline edges get medium.

['base', 'medium', 'medium', 'base']: Values apply to block-start, inline-end, block-end, and inline-start respectively.
Anchor to columns columns <> Default: 'fill': The sizes for each column of the layout.

auto: The intrinsic size of the element.

fill: Fills the remaining available space. When multiple elements use fill, the space is shared equally.

`${number}%`: A percentage of the container's inline size.

`${number}fr`: A fractional unit of the available space.

number: A fixed size in pixels.

When the sum of defined sizes exceeds the available space, elements shrink to avoid overflow. Elements without an explicit size fill the remaining space. A single value outside an array applies to all columns.
Anchor to cornerRadius cornerRadius < <> >: The corner radius of the element. Accepts a single value for all four corners, or a shorthand tuple for per-corner control using logical (writing-mode-aware) corners:

'base': All four corners get base radius.

['base', 'none']: StartStart/EndEnd get base, StartEnd/EndStart get none. In left-to-right mode, StartStart and EndEnd are the top-left and bottom-right corners.

['base', 'none', 'small', 'base']: Values apply to StartStart, StartEnd, EndEnd, and EndStart respectively.

A borderRadius alias is available. When both are set, cornerRadius takes precedence.
Anchor to display display <'auto' | 'none'> Default: 'auto': The display mode of the component. Learn more about display.

auto: The initial value; the actual behavior depends on the component and context.

none: Hides the component and removes it from the accessibility tree.
Anchor to id id string: A unique identifier for the component. Use this to target the component in scripts or stylesheets, or to distinguish it from other instances of the same component.
Anchor to inlineAlignment inlineAlignment <>: The alignment of children along the inline (main) axis.
Anchor to maxBlockSize maxBlockSize < number | `${number}%` | 'fill' >: The maximum block size (maximum height in horizontal writing modes). The element won't grow taller than this value even if its content is longer.

number: The size in pixels.

`${number}%`: The size as a percentage of the parent container's block size.

'fill': Takes all the available space.

Learn more about the max-block-size property.
Anchor to maxInlineSize maxInlineSize < number | `${number}%` | 'fill' >: The maximum inline size (maximum width in horizontal writing modes). The element won't grow wider than this value.

number: The size in pixels.

`${number}%`: The size as a percentage of the parent container's inline size.

'fill': Takes all the available space.

Learn more about the max-inline-size property.
Anchor to minBlockSize minBlockSize < number | `${number}%` | 'fill' >: The minimum block size (minimum height in horizontal writing modes). The element won't shrink smaller than this value even if its content is shorter.

number: The size in pixels.

`${number}%`: The size as a percentage of the parent container's block size.

'fill': Takes all the available space.

Learn more about the min-block-size property.
Anchor to minInlineSize minInlineSize < number | `${number}%` | 'fill' >: The minimum inline size (minimum width in horizontal writing modes). The element won't shrink narrower than this value.

number: The size in pixels.

`${number}%`: The size as a percentage of the parent container's inline size.

'fill': Takes all the available space.

Learn more about the min-inline-size property.
Anchor to overflow overflow 'hidden' | 'visible' Default: 'visible': The overflow behavior of the element.

visible: Content that extends beyond the container is visible.

hidden: Content that extends beyond the container is clipped and not scrollable.
Anchor to padding padding <<>>: The padding on all edges of the element, using a shorthand syntax. You can specify one, two, or four values following the CSS shorthand convention.

T: A single value applied uniformly to all edges.

[T, T]: The first value applies to block-start and block-end, the second to inline-start and inline-end.

[T, T, T, T]: Values apply to block-start, inline-end, block-end, and inline-start respectively.
Anchor to spacing spacing < | [, ]> Default: 'none': The spacing between child elements. A single value applies to both the row and column axes. A pair of values (for example, ['base', 'none']) sets the row and column spacing independently.
Anchor to borderRadius borderRadius < <> >: The corner radius of the element. Accepts a single value for all four corners, or a shorthand tuple for per-corner control:

'base': All four corners get base radius.

['base', 'none']: StartStart/EndEnd get base, StartEnd/EndStart get none.

['base', 'none', 'small', 'base']: Values apply to StartStart, StartEnd, EndEnd, and EndStart respectively.

Deprecated
Use cornerRadius instead.

ViewLikeAccessibilityRole

The accessibility role accepted by view-like layout components. Accepts a single `NonPresentationalAccessibilityRole`, or a tuple of two roles to combine semantic meaning (for example, `['listItem', 'separator']` renders as `<li role='separator'>`).

NonPresentationalAccessibilityRole | [NonPresentationalAccessibilityRole, NonPresentationalAccessibilityRole]

NonPresentationalAccessibilityRole

The subset of accessibility roles available to layout components. Excludes `decorative` and `presentation`, which are only available on the full `AccessibilityRole` type. - `main`: The primary content of the page. - `header`: A page or section header. - `footer`: A section for copyright information, navigation links, and privacy statements. - `section`: A generic section; should have a heading or accessible label. - `complementary`: A supporting section related to the main content. - `navigation`: A major group of navigation links. - `orderedList`: A list of ordered items. - `listItem`: An item inside a list. - `unorderedList`: A list of unordered items. - `separator`: A divider separating sections of content. - `status`: A live region with advisory information that isn't urgent enough to be an alert. - `alert`: Important, usually time-sensitive information.

'main' | 'header' | 'footer' | 'section' | 'complementary' | 'navigation' | 'orderedList' | 'listItem' | 'unorderedList' | 'separator' | 'status' | 'alert'

MaybeConditionalStyle

A type that represents a value that can be a conditional style. We highly recommend using the `Style` helper which simplifies the creation of conditional styles.

T | ConditionalStyle<T, AcceptedConditions>

ConditionalStyle

A conditional style definition that maps one or more conditions to different values. The `default` value is used as a fallback when none of the conditions in `conditionals` are satisfied.

conditionals
An array of conditional values.
```
ConditionalValue<T, AcceptedConditions>[]
```
default
The default value applied when none of the conditional values specified in `conditionals` are met.
```
T
```

ConditionalValue

A single conditional branch that pairs a set of conditions with the value to apply when those conditions are met.

conditions
The conditions that must be met for the value to be applied. At least one condition must be specified.
```
AcceptedConditions
```
value
The value that will be applied if the conditions are met.
```
T
```

Background

A keyword that maps to a predefined background color from the design system. - `transparent`: No background color; the parent's background shows through. - `base`: The standard surface background color. - `subdued`: A muted background color, typically used to de-emphasize content or distinguish secondary areas from the primary surface.

'transparent' | 'base' | 'subdued'

MaybeResponsiveConditionalStyle

A type that represents a value that can be a conditional style. The conditions are based on the viewport size. We highly recommend using the `Style` helper which simplifies the creation of conditional styles.

T | ConditionalStyle<T, ViewportSizeCondition>

ViewportSizeCondition

A condition that targets layouts based on the inline size (width in horizontal writing modes) of the viewport.

viewportInlineSize
The minimum viewport inline size that the condition must match.
```
{ min: T; }
```

BlockAlignment

Controls how content is aligned along the block axis (vertical in standard writing modes). - `'start'`: Aligns content to the block start of the container. - `'center'`: Centers content along the block axis. - `'end'`: Aligns content to the block end of the container. - `'baseline'`: Aligns content so their text baselines line up.

Alignment | 'baseline'

Alignment

Controls how content is aligned along the cross axis. - `'start'`: Aligns content to the start of the container. - `'center'`: Centers content within the container. - `'end'`: Aligns content to the end of the container.

'start' | 'center' | 'end'

MaybeShorthandProperty

A type that accepts either a single value applied to all edges or a shorthand tuple for per-edge control. - `T`: A single value applied uniformly to all edges. - `[T, T]`: The first value applies to block-start and block-end, the second to inline-start and inline-end. - `[T, T, T, T]`: Values apply to block-start, inline-end, block-end, and inline-start respectively.

T | ShorthandProperty<T>

ShorthandProperty

A tuple type that accepts two or four values following the CSS shorthand convention for box edges. - `[T, T]`: The first value applies to block-start and block-end, the second to inline-start and inline-end. - `[T, T, T, T]`: Values apply to block-start, inline-end, block-end, and inline-start respectively.

[T, T] | [T, T, T, T]

BorderStyle

A keyword that maps to a predefined border style from the design system. - `base`: A solid border line, suitable for most use cases. - `dashed`: A dashed border line, often used for drop zones or placeholder boundaries. - `dotted`: A dotted border line. - `none`: No border is rendered.

'base' | 'dashed' | 'dotted' | 'none'

CornerRadius

A keyword that maps to a predefined corner radius from the design system. - `base`: The default corner radius. - `small`: A subtle corner radius, smaller than `base`. - `large`: A pronounced corner radius, larger than `base`. - `fullyRounded`: Fully rounds the corners into a pill or circle shape. - `none`: No corner rounding; sharp square corners.

'base' | 'small' | 'large' | 'fullyRounded' | 'none' | CornerRadiusDeprecated

CornerRadiusDeprecated

'tight' | 'loose'

BorderWidth

A keyword that maps to a predefined border width from the design system. - `base`: The default border width. - `medium`: A medium border width, thicker than `base`. - `thick`: The thickest available border width.

'base' | 'medium' | 'thick'

Columns

The column sizing configuration for a grid-based layout. Accepts a single `GridItemSize` applied to all columns, or an array with one size per column.

GridItemSize[] | GridItemSize

GridItemSize

The size of a column or row in a grid-based layout. - `'auto'`: The intrinsic size of the content. - `'fill'`: Fills the remaining available space. When multiple items use `fill`, the space is shared equally. - `number`: A fixed size in pixels. - `` `${number}fr` ``: A fractional unit of the available space. - `` `${number}%` ``: A percentage of the container's size.

'auto' | 'fill' | number | `${number}fr` | `${number}%`

InlineAlignment

Controls how content is aligned along the inline axis (horizontal in standard writing modes). - `'start'`: Aligns content to the inline start of the container. - `'center'`: Centers content along the inline axis. - `'end'`: Aligns content to the inline end of the container.

'start' | 'center' | 'end'

Spacing

A keyword that maps to a predefined spacing value from the design system. Use these instead of pixel values to ensure consistent spacing throughout the UI. - `none`: No spacing (0px). - `extraTight`: The smallest amount of spacing. - `tight`: A compact amount of spacing, suitable for tight layouts. - `base`: The default spacing, appropriate for most layouts. - `loose`: A generous amount of spacing, used to create visual separation. - `extraLoose`: The largest amount of spacing.

'none' | 'extraTight' | 'tight' | 'base' | 'loose' | 'extraLoose'

Anchor to ExamplesExamples

Anchor to Create a multi-column layoutCreate a multi-column layout

Use InlineLayout to arrange content in multiple columns. This example shows the default behavior where columns share available space equally.

Create a multi-column layout

An InlineLayout arranging content in multiple columns.

Create a multi-column layout

import {

reactExtension,

InlineLayout,

View,

} from '@shopify/ui-extensions-react/customer-account';

export default reactExtension(

'customer-account.page.render',

() => <Extension />,

);

function Extension() {

return (

20%

</View>

fill

</View>

</InlineLayout>

);

}

import {extension, InlineLayout, View} from '@shopify/ui-extensions/customer-account';

export default extension('customer-account.page.render', (root) => {

const inlineLayout = root.createComponent(

InlineLayout,

{

columns: ['20%', 'fill'],

[

root.createComponent(View, {border: 'base', padding: 'base'}, '20%'),

root.createComponent(View, {border: 'base', padding: 'base'}, 'fill'),

);

root.appendChild(inlineLayout);

});

React

import {
  reactExtension,
  InlineLayout,
  View,
} from '@shopify/ui-extensions-react/customer-account';

export default reactExtension(
  'customer-account.page.render',
  () => <Extension />,
);

function Extension() {
  return (
    <InlineLayout columns={['20%', 'fill']}>
      <View border="base" padding="base">
        20%
      </View>
      <View border="base" padding="base">
        fill
      </View>
    </InlineLayout>
  );
}

JS

import {extension, InlineLayout, View} from '@shopify/ui-extensions/customer-account';

export default extension('customer-account.page.render', (root) => {
  const inlineLayout = root.createComponent(
    InlineLayout,
    {
      columns: ['20%', 'fill'],
    },
    [
      root.createComponent(View, {border: 'base', padding: 'base'}, '20%'),
      root.createComponent(View, {border: 'base', padding: 'base'}, 'fill'),
    ],
  );

  root.appendChild(inlineLayout);
});

Anchor to Combine with disclosure for progressive contentCombine with disclosure for progressive content

Use Disclosure with inline and block layout components to simplify the interface and reveal content only when the customer requests it.

Combine with disclosure for progressive content

A disclosure component revealing additional content in a multi-column layout.

Combine with disclosure for progressive content

import {

reactExtension,

View,

Image,

Icon,

Pressable,

Disclosure,

InlineLayout,

BlockStack,

Text,

Form,

TextField,

Button,

Divider,

InlineStack,

} from '@shopify/ui-extensions-react/checkout';

export default reactExtension(

'purchase.checkout.block.render',

() => <DisclosureAndAlignment />,

);

export const DisclosureAndAlignment = () => {

const openIds = ['one'];

return (

<View

maxInlineSize={400}

cornerRadius="large"

border="base"

<Disclosure

defaultOpen="one"

onToggle={(open) =>

console.log('onToggle event', open)

}

<InlineLayout

blockAlignment="center"

spacing="base"

columns={['auto', 'fill', 'auto']}

<Icon

source="gift"

appearance="subdued"

Gift message

<Icon

source={

openIds.includes('one')

? 'chevronUp'

: 'chevronDown'

}

appearance="subdued"

</InlineLayout>

</Pressable>

<View

id="one"

padding={[

'none',

'base',

]}

<Form

onSubmit={() =>

console.log('onSubmit event')

}

<InlineLayout

columns={['fill', 'fill']}

spacing="base"

<TextField

label="From"

name="from0"

id="from0"

<TextField

label="To"

name="to0"

id="to0"

</InlineLayout>

<TextField

label="Message"

name="message0"

id="message0"

<View>

<Button

accessibilityRole="submit"

kind="secondary"

Save

</Button>

</View>

</BlockStack>

</Form>

</View>

</Disclosure>

<InlineLayout

blockAlignment="baseline"

spacing="base"

columns={['auto', 'fill', 'auto']}

padding="base"

<Icon

source="profile"

appearance="subdued"

<Text>Verify with</Text>

</InlineStack>

<Text

appearance="subdued"

size="small"

15% savings for students and

military

</Text>

</BlockStack>

<Icon

source="external"

appearance="subdued"

</Pressable>

</InlineLayout>

</BlockStack>

</View>

);

};

import {

extension,

BlockStack,

View,

InlineLayout,

InlineStack,

Image,

Pressable,

Icon,

Text,

TextField,

Form,

Button,

Disclosure,

Divider,

} from '@shopify/ui-extensions/checkout';

export default extension(

'purchase.checkout.block.render',

(root) => {

const openIds = ['one'];

const pressable = root.createComponent(

Pressable,

{

toggles: 'one',

padding: 'base',

[

root.createComponent(

InlineLayout,

{

blockAlignment: 'center',

spacing: 'base',

columns: ['auto', 'fill', 'auto'],

React

import {
  reactExtension,
  View,
  Image,
  Icon,
  Pressable,
  Disclosure,
  InlineLayout,
  BlockStack,
  Text,
  Form,
  TextField,
  Button,
  Divider,
  InlineStack,
} from '@shopify/ui-extensions-react/checkout';

export default reactExtension(
  'purchase.checkout.block.render',
  () => <DisclosureAndAlignment />,
);

export const DisclosureAndAlignment = () => {
  const openIds = ['one'];
  return (
    <View
      maxInlineSize={400}
      cornerRadius="large"
      border="base"
    >
      <BlockStack spacing="none">
        <Disclosure
          defaultOpen="one"
          onToggle={(open) =>
            console.log('onToggle event', open)
          }
        >
          <Pressable toggles="one" padding="base">
            <InlineLayout
              blockAlignment="center"
              spacing="base"
              columns={['auto', 'fill', 'auto']}
            >
              <Icon
                source="gift"
                appearance="subdued"
              />
              Gift message
              <Icon
                source={
                  openIds.includes('one')
                    ? 'chevronUp'
                    : 'chevronDown'
                }
                appearance="subdued"
              />
            </InlineLayout>
          </Pressable>
          <View
            id="one"
            padding={[
              'none',
              'base',
              'base',
              'base',
            ]}
          >
            <Form
              onSubmit={() =>
                console.log('onSubmit event')
              }
            >
              <BlockStack>
                <InlineLayout
                  columns={['fill', 'fill']}
                  spacing="base"
                >
                  <TextField
                    label="From"
                    name="from0"
                    id="from0"
                  />
                  <TextField
                    label="To"
                    name="to0"
                    id="to0"
                  />
                </InlineLayout>
                <TextField
                  label="Message"
                  name="message0"
                  id="message0"
                />
                <View>
                  <Button
                    accessibilityRole="submit"
                    kind="secondary"
                  >
                    Save
                  </Button>
                </View>
              </BlockStack>
            </Form>
          </View>
        </Disclosure>
        <Divider />
        <InlineLayout
          blockAlignment="baseline"
          spacing="base"
          columns={['auto', 'fill', 'auto']}
          padding="base"
        >
          <Icon
            source="profile"
            appearance="subdued"
          />
          <BlockStack spacing="none">
            <InlineStack blockAlignment="center">
              <Text>Verify with</Text>
              <Image source="https://via.placeholder.com/50x15" />
            </InlineStack>
            <Text
              appearance="subdued"
              size="small"
            >
              15% savings for students and
              military
            </Text>
          </BlockStack>
          <Pressable to="https://www.shopify.com">
            <Icon
              source="external"
              appearance="subdued"
            />
          </Pressable>
        </InlineLayout>
      </BlockStack>
    </View>
  );
};

JavaScript

import {
  extension,
  BlockStack,
  View,
  InlineLayout,
  InlineStack,
  Image,
  Pressable,
  Icon,
  Text,
  TextField,
  Form,
  Button,
  Disclosure,
  Divider,
} from '@shopify/ui-extensions/checkout';

export default extension(
  'purchase.checkout.block.render',
  (root) => {
    const openIds = ['one'];

    const pressable = root.createComponent(
      Pressable,
      {
        toggles: 'one',
        padding: 'base',
      },
      [
        root.createComponent(
          InlineLayout,
          {
            blockAlignment: 'center',
            spacing: 'base',
            columns: ['auto', 'fill', 'auto'],
          },
          [
            root.createComponent(Icon, {
              source: 'gift',
              appearance: 'subdued',
            }),
            'Gift message',
            root.createComponent(Icon, {
              source: openIds.includes('one')
                ? 'chevronUp'
                : 'chevronDown',
              size: 'small',
            }),
          ],
        ),
      ],
    );

    const disclosureView = root.createComponent(
      View,
      {
        id: 'one',
        padding: ['none', 'base', 'base', 'base'],
      },
      [
        root.createComponent(
          Form,
          {
            onSubmit: () =>
              console.log('onSubmit event'),
          },
          [
            root.createComponent(BlockStack, {}, [
              root.createComponent(
                InlineLayout,
                {
                  columns: ['fill', 'fill'],
                  spacing: 'base',
                },
                [
                  root.createComponent(
                    TextField,
                    {
                      label: 'From',
                      name: 'from0',
                      id: 'from0',
                    },
                  ),
                  root.createComponent(
                    TextField,
                    {
                      label: 'To',
                      name: 'to0',
                      id: 'to0',
                    },
                  ),
                ],
              ),
              root.createComponent(TextField, {
                label: 'Message',
                name: 'message0',
                id: 'message0',
              }),
              root.createComponent(View, {}, [
                root.createComponent(
                  Button,
                  {
                    accessibilityRole: 'submit',
                    kind: 'secondary',
                  },
                  'Save',
                ),
              ]),
            ]),
          ],
        ),
      ],
    );

    const disclosure = root.createComponent(
      Disclosure,
      {
        defaultOpen: 'one',
        onToggle: (open) =>
          console.log('onToggle event', open),
      },
      [pressable, disclosureView],
    );

    const inlineLayout = root.createComponent(
      InlineLayout,
      {
        blockAlignment: 'baseline',
        spacing: 'base',
        columns: ['auto', 'fill', 'auto'],
        padding: 'base',
      },
      [
        root.createComponent(Icon, {
          source: 'profile',
          appearance: 'subdued',
        }),
        root.createComponent(
          BlockStack,
          {
            spacing: 'none',
          },
          [
            root.createComponent(
              InlineStack,
              {
                blockAlignment: 'center',
              },
              [
                root.createComponent(
                  Text,
                  {},
                  'Verify with',
                ),
                root.createComponent(Image, {
                  source:
                    'https://via.placeholder.com/50x15',
                }),
              ],
            ),
            root.createComponent(
              Text,
              {
                appearance: 'subdued',
                size: 'small',
              },
              '15% savings for students and military',
            ),
          ],
        ),
        root.createComponent(
          Pressable,
          {
            to: 'https://www.shopify.com',
          },
          [
            root.createComponent(Icon, {
              source: 'external',
              appearance: 'subdued',
            }),
          ],
        ),
      ],
    );
    const view = root.createComponent(
      View,
      {
        maxInlineSize: 400,
        cornerRadius: 'large',
        border: 'base',
      },
      [
        root.createComponent(
          BlockStack,
          {
            spacing: 'none',
          },
          [
            disclosure,
            root.createComponent(Divider),
            inlineLayout,
          ],
        ),
      ],
    );

    root.appendChild(view);
  },
);

Anchor to Best practicesBest practices

Define explicit column sizes: Set the columns prop with specific sizes like ["fill", "auto"] for predictable layouts. Default equal distribution works for balanced content.
Use InlineLayout for fixed column structures: InlineLayout is best when you know exactly how many columns you need. For wrapping horizontal lists, use InlineStack.
Combine with StyleHelper for responsiveness: Use StyleHelper to adjust column definitions at different viewport breakpoints.

Anchor to LimitationsLimitations

Content doesn't wrap to new rows. If you add more children than defined columns, they're squeezed into additional columns.
InlineLayout doesn't support row-based control. For row management, use BlockLayout or Grid.
Column sizes are defined as a flat array. You can't assign sizes to specific columns by name.

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