# Preview Features

> **⚠️ Alpha** — these features are available as alpha prereleases only.
>
> Install via `npm i @fluentui/react-icons@alpha`

## [Atomic API (SVG Sprites)](./svg-sprites.md)

SVG sprites offer smaller bundles, faster renders, and zero runtime overhead.

## [Base API](./base.md)

A drop-in replacement for the standard API that removes the CSS-in-JS runtime — provides data-attribute selectors for styling behaviour with opt-in pre-defined vanilla CSS.