---
title: "LayerSpecification | 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.

# Type Alias LayerSpecification

LayerSpecification:  
    | [FillLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/FillLayerSpecification/)  
    | [LineLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/LineLayerSpecification/)  
    | [SymbolLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/SymbolLayerSpecification/)  
    | [CircleLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/CircleLayerSpecification/)  
    | [HeatmapLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/HeatmapLayerSpecification/)  
    | [FillExtrusionLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/FillExtrusionLayerSpecification/)  
    | [RasterLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/RasterLayerSpecification/)  
    | [HillshadeLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/HillshadeLayerSpecification/)  
    | [ColorReliefLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/ColorReliefLayerSpecification/)  
    | [BackgroundLayerSpecification](https://docs.maptiler.com/sdk-js/api-reference/types/BackgroundLayerSpecification/)