---
schema_version: "1"
id: ae4bca53d65034eff2669fa4d3d5ea8fba6554f6bf3e3da8149e34fb75b32e9c
title: FirstVizSizeKnownEvent | Tableau Embedding API
collection: tableau
version: next
locale: en-us
portal_url: https://docs.salesforce.com/tableau/next/en-us/api/embedding_api/reference/interfaces/FirstVizSizeKnownEvent.md
canonical_url: https://help.tableau.com/v0.0/api/embedding_api/en-us/reference/interfaces/FirstVizSizeKnownEvent.html
source_site: help.tableau.com
content_type: documentation
content_hash: 4977070ac6237a9c38c9c2dc73525e69a7465a4bcce3c6bb0a715c9103f9079a
description: Documentation for Tableau Embedding API
---
- FirstVizSizeKnownEvent

# Interface FirstVizSizeKnownEvent

Initial event which is triggered as soon as the viz size is known

interface FirstVizSizeKnownEvent {  
    [vizSize](#vizsize): [VizSize](https://help.tableau.com/v0.0/api/embedding_api/en-us/reference/interfaces/VizSize.html);  
}

- Defined in packages/api-external-contract-js/src/ExternalContract/Embedding/EventInterfaces.ts:14

##### Index

### Properties

[vizSize](#vizsize)

## Properties

### `Readonly`vizSize[](#vizsize)

vizSize: [VizSize](https://help.tableau.com/v0.0/api/embedding_api/en-us/reference/interfaces/VizSize.html)

- Defined in packages/api-external-contract-js/src/ExternalContract/Embedding/EventInterfaces.ts:15

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Properties

[vizSize](#vizsize)