React Router Product Analytics installation

Install the package

Required

Install the PostHog JavaScript library and React SDK using your package manager:

npm install --save posthog-js @posthog/react
yarn add posthog-js @posthog/react
pnpm add posthog-js @posthog/react

Configure Vite

Required

Add posthog-js and @posthog/react to ssr.noExternal in your vite.config.ts to avoid SSR errors:

vite.config.ts
// ... imports

export default defineConfig({
  plugins: [tailwindcss(), reactRouter(), tsconfigPaths()],
  ssr: {
    noExternal: ['posthog-js', '@posthog/react'],
  },
});

Add the PostHogProvider

Required

Initialize PostHog and wrap your app with the PostHogProvider in your app/entry.client.tsx file:

app/entry.client.tsx
import { startTransition, StrictMode } from "react";
import { hydrateRoot } from "react-dom/client";
import { HydratedRouter } from "react-router/dom";
import posthog from "posthog-js";
import { PostHogProvider } from "@posthog/react";

posthog.init("<ph_project_token>", {
  api_host: "https://us.i.posthog.com",
  defaults: "2026-01-30",
});

startTransition(() => {
  hydrateRoot(
    document,
    <PostHogProvider client={posthog}>
      <StrictMode>
        <HydratedRouter />
      </StrictMode>
    </PostHogProvider>,
  );
});

Send events

Click around and view a couple pages to generate some events. PostHog automatically captures pageviews, clicks, and other interactions for you.

If you'd like, you can also manually capture custom events:

JavaScript
posthog.capture('my_custom_event', { property: 'value' })

Next steps

Recommended

Now that you're capturing events, continue with the resources below to learn what else Product Analytics enables within the PostHog platform.

Resource	Description
Capturing events	Learn how to capture custom events beyond autocapture
Identifying users	Associate events with specific users
Creating insights	Build trends, funnels, and retention charts
Group analytics	Track events at the company or account level

React Router Product Analytics installation

Install the package

Configure Vite

Add the PostHogProvider

Send events

Next steps

Community questions

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