---
title: "OffscreenCanvas | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Variable OffscreenCanvas

OffscreenCanvas: {  
    prototype: [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/);  
    new (width: number, height: number): [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/);  
}

#### Type Declaration

-   -   new (width: number, height: number): [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/)
    -   #### Parameters
        
        -   width: number
        -   height: number
        
        #### Returns [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/)
        
-   ##### prototype: [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/)