# useReducedMotion > Honor the user's prefers-reduced-motion accessibility setting with Svelte Motion useReducedMotion. A reactive store that updates live when the OS preference changes. **Source:** [https://motion.svelte.page/examples/use-reduced-motion](https://motion.svelte.page/examples/use-reduced-motion) **Markdown mirror:** [https://motion.svelte.page/examples/use-reduced-motion.md](https://motion.svelte.page/examples/use-reduced-motion.md) --- This mirror preserves the prose, implementation notes, and runnable Svelte source behind the live example page. ## FIG-001: respect reduced motion. `useReducedMotion()` returns a reactive store backed by the `(prefers-reduced-motion: reduce)` media query. Gate any non-essential animation — and add an in-page override so users can opt in/out independently. **Metadata:** tag: `HOOK` | pattern: `a11y media query` ### Notes - The hook subscribes to the media query and updates the store live — flip the OS setting and your animations respond without a reload. Critical for users with vestibular disorders. - In Chrome DevTools, open Rendering and emulate `prefers-reduced-motion: reduce` to verify the disabled path. Same pattern works in Firefox / Safari accessibility panels. - The toggle OR s an in-page preference against the OS setting. Effective rule of thumb: never disable an animation the user explicitly enabled, even if the OS says reduce. ### Source #### Default.svelte Source file: [src/lib/examples/use-reduced-motion/demos/Default.svelte](https://github.com/humanspeak/svelte-motion/blob/main/docs/src/lib/examples/use-reduced-motion/demos/Default.svelte) ```svelte
// use-reduced-motion policy: {effective ? 'reduce' : 'no-preference'}
({ width: 108, height: 108, border: '1px solid var(--brut-ink, #0a0a0a)', background: 'var(--brut-bg-2, #eef4f1)', boxShadow: '6px 6px 0 var(--brut-rule, #d6dedb)', transformOrigin: '50% 50%' }))} >
os preference {reduced.current ? 'reduce' : 'no-preference'}

Tip: Chrome DevTools → Rendering → emulate prefers-reduced-motion: reduce to test the OS path.

```