# Viewers The **Viewers** object is a collection of all currently open standalone [image viewers](https://chaoses-ib.gitbook.io/directory-opus/manual/additional_functionality/viewing_images). It can be obtained via the [**DOpus**](https://chaoses-ib.gitbook.io/directory-opus/manual/reference/scripting_reference/scripting_objects/dopus)**.viewers** property. | Property Name | Return Type | Description | | ------------------ | ------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | *\* | *collection:*[**Viewer**](https://chaoses-ib.gitbook.io/directory-opus/manual/reference/scripting_reference/scripting_objects/viewer) | Lets you enumerate the currently open viewers. | | lastactive | *object:*[**Viewer**](https://chaoses-ib.gitbook.io/directory-opus/manual/reference/scripting_reference/scripting_objects/viewer) | Returns a [**Viewer**](https://chaoses-ib.gitbook.io/directory-opus/manual/reference/scripting_reference/scripting_objects/viewer) object representing the most recently active viewer window. | | Method Name | **Arguments** | Return Type | Description | | ----------- | ------------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Update | *none* | *none* | The first time a script accesses the **DOpus.viewers** property, a snapshot is taken of all currently open viewers. If anything opens or closes viewers after this, these changes will not be reflected by snapshot unless you re-synchronize it by calling the **Update** method. |