> ## Documentation Index
> Fetch the complete documentation index at: https://docs.twenty.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Page Layouts

> Customize record detail pages — tabs, widgets, and where front components render — using definePageLayout and definePageLayoutTab.

A **page layout** controls how a record's detail page is arranged: which tabs appear and what widgets they contain. Use `definePageLayout()` to declare a layout for an object you own, or `definePageLayoutTab()` to add a single tab to a layout that already exists (yours or a standard Twenty one).

| Use case                                                               | Entity                |
| ---------------------------------------------------------------------- | --------------------- |
| Define the entire layout for a record page on an object you own        | `definePageLayout`    |
| Add one tab to an existing layout (your own object, or a standard one) | `definePageLayoutTab` |

## definePageLayout

Use this when you own the entire detail page — typically for a custom object you defined yourself.

```ts src/page-layouts/example-record-page-layout.ts theme={null}
import { definePageLayout, PageLayoutTabLayoutMode } from 'twenty-sdk/define';
import { EXAMPLE_OBJECT_UNIVERSAL_IDENTIFIER } from '../objects/example-object';
import { HELLO_WORLD_FRONT_COMPONENT_UNIVERSAL_IDENTIFIER } from '../front-components/hello-world';

export default definePageLayout({
  universalIdentifier: '203aeb94-6701-46d6-9af1-be2bbcc9e134',
  name: 'Example Record Page',
  type: 'RECORD_PAGE',
  objectUniversalIdentifier: EXAMPLE_OBJECT_UNIVERSAL_IDENTIFIER,
  tabs: [
    {
      universalIdentifier: '6ed26b60-a51d-4ad7-86dd-1c04c7f3cac5',
      title: 'Hello World',
      position: 50,
      icon: 'IconWorld',
      layoutMode: PageLayoutTabLayoutMode.CANVAS,
      widgets: [
        {
          universalIdentifier: 'aa4234e0-2e5f-4c02-a96a-573449e2351d',
          title: 'Hello World',
          type: 'FRONT_COMPONENT',
          configuration: {
            configurationType: 'FRONT_COMPONENT',
            frontComponentUniversalIdentifier:
              HELLO_WORLD_FRONT_COMPONENT_UNIVERSAL_IDENTIFIER,
          },
        },
      ],
    },
  ],
});
```

### Key points

* `type` is typically `'RECORD_PAGE'` to customize the detail view of a specific object.
* `objectUniversalIdentifier` specifies which object this layout applies to.
* Each `tab` defines a section of the page with a `title`, `position`, and `layoutMode` (`CANVAS` for free-form layout).
* Each `widget` inside a tab can render a [front component](/developers/extend/apps/layout/front-components), a relation list, or other built-in widget types.
* `position` on tabs controls their order. Use higher values (e.g., 50) to place custom tabs after built-in ones.

## definePageLayoutTab

Use this when you only want to **add** a tab to an existing layout — for example, an analytics tab on the standard Company page, or an AI summary tab attached to your own object's layout.

```ts src/page-layouts/example-extra-tab.ts theme={null}
import {
  definePageLayoutTab,
  PageLayoutTabLayoutMode,
  STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS,
} from 'twenty-sdk/define';
import { HELLO_WORLD_FRONT_COMPONENT_UNIVERSAL_IDENTIFIER } from '../front-components/hello-world';

export default definePageLayoutTab({
  universalIdentifier: 'b1b2b3b4-b5b6-4000-8000-000000000001',
  pageLayoutUniversalIdentifier:
    STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.companyRecordPage
      .universalIdentifier,
  title: 'Hello World',
  position: 1000,
  icon: 'IconWorld',
  layoutMode: PageLayoutTabLayoutMode.CANVAS,
  widgets: [
    {
      universalIdentifier: 'b1b2b3b4-b5b6-4000-8000-000000000002',
      title: 'Hello World',
      type: 'FRONT_COMPONENT',
      configuration: {
        configurationType: 'FRONT_COMPONENT',
        frontComponentUniversalIdentifier:
          HELLO_WORLD_FRONT_COMPONENT_UNIVERSAL_IDENTIFIER,
      },
    },
  ],
});
```

### Key points

* `pageLayoutUniversalIdentifier` is **required** and must point to a page layout that already exists at install time — either a standard Twenty layout or one defined by your own app. Cross-app references to layouts owned by another installed app are not supported today. When the parent layout is missing, installation fails with a clear validation error.

* For standard Twenty layouts, import identifiers from `twenty-sdk/define`:

  ```ts theme={null}
  import { STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS } from 'twenty-sdk/define';

  // STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.companyRecordPage.universalIdentifier
  // STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.personRecordPage.universalIdentifier
  // STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.taskRecordPage.universalIdentifier
  // STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.opportunityRecordPage.universalIdentifier
  // STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.noteRecordPage.universalIdentifier
  // …
  ```

  Each layout entry also exposes its `tabs` and their `widgets`, so you can reference any level:

  ```ts theme={null}
  STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.taskRecordPage.tabs.home.universalIdentifier
  STANDARD_PAGE_LAYOUT_UNIVERSAL_IDENTIFIERS.taskRecordPage.tabs.home.widgets.fields.universalIdentifier
  ```

  A short alias `STANDARD_PAGE_LAYOUT` is also available:

  ```ts theme={null}
  import { STANDARD_PAGE_LAYOUT } from 'twenty-sdk/define';

  STANDARD_PAGE_LAYOUT.companyRecordPage.universalIdentifier;
  ```

* `widgets` are scoped to this tab only — they reference [front components](/developers/extend/apps/layout/front-components), views, etc. exactly like widgets defined inline in `definePageLayout`.

* `position` controls ordering against existing tabs on the targeted layout. Pick a value that places your tab where you want it relative to built-in tabs.

* Use this instead of `definePageLayout` when you only want to add to an existing layout. Use `definePageLayout` when you own the entire layout.