Document preview API changes#36
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| | `ExternalHtml` | Opens the preview file in the default browser. | | ||
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| > [!NOTE] | ||
| > Using a preview UI that is not in this list is not yet supported in Studio |
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Use Var:ProductName instead of Studio
| `BuildPreviewApplication` on the File Type Component Builder and returning a | ||
| custom `UserControl` or a `GenericExternalPreviewApplication` instance. | ||
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| Starting with Studio 2026, **Studio ships a set of built-in preview UIs**. |
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Replace it with : Var:ProductName 2026
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| > [!NOTE] | ||
| > Using a Preview ID that is not in this list is not yet supported. Custom | ||
| > third-party preview UIs cannot be registered in Studio 2026. |
| ## Migration checklist | ||
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| Use this checklist when updating an existing file type plugin to target | ||
| Studio 2026. |
cornea-robert
approved these changes
Jun 12, 2026
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Add documentation for preview API changes introduced in 2026