# onNuxtReady > The onNuxtReady composable allows running a callback after your app has finished initializing. `onNuxtReady` only runs on the client-side.
It is ideal for running code that should not block the initial rendering of your app. ```ts [app/plugins/ready.client.ts] export default defineNuxtPlugin(() => { onNuxtReady(async () => { const myAnalyticsLibrary = await import('my-big-analytics-library') // do something with myAnalyticsLibrary }) }) ``` It is 'safe' to run even after your app has initialized. In this case, then the code will be registered to run in the next idle callback. --- - [Source](https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/ready.ts)