---
title: "BlobCallback | 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.

# Interface BlobCallback

-   BlobCallback(blob: Blob | null): void[](#blobcallback)
    
    #### Parameters
    
    -   blob: Blob | null
    
    #### Returns void