# $env/dynamic/public Definition
**Definition:** Runtime (dynamic) public environment variables safe
for client usage. Includes only variables with `publicPrefix` (default
`PUBLIC_`).
**Syntax:** `import { env } from '$env/dynamic/public'`
**Notes:**
- Public dynamic vars are sent from server to client; prefer
`$env/static/public` when possible.
## Example
```ts
import { env } from '$env/dynamic/public';
const base = env.PUBLIC_BASE_URL;
```
## Related
- `$env/static/public`, `$env/dynamic/private`
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