---
title: "Using raster sprites (legacy) | Guides | Map design"
description: "How to upload custom icons using the legacy sprite format."
---

# Using raster sprites (legacy)

When [adding custom icons](https://docs.maptiler.com/guides/map-design/icons/manage-custom-icons/#add-icons), it’s also possible to upload a pre-generated **sprite**. This is useful if you have icons created in a legacy tool (like Spreet) or simply want to import sprites from an older map and don’t want to re-create the icons individually.

We support sprite upload in both **standard raster** and **modern SDF** formats. Note the following:

-   You must upload two files: `sprite@2x.png` and `sprite@2x.json`. They must be named exactly as shown.
-   If the icons inside are mixed format (some simple raster, some SDF), the sprite will be split into two separate icon sets.
-   After upload, you can edit your set, including adding new icons to it. Note the [requirements and size limits](https://docs.maptiler.com/guides/map-design/icons/prepare-custom-icons/).

Tip

A standard raster sprite doesn’t support icon styling. To be able to customize icons in your maps, prepare them [individually in vector format](https://docs.maptiler.com/guides/map-design/icons/prepare-custom-icons/). This also makes it much easier to redesign and replace icons later on.