next-plausible

Next-Plausible ·

Simple integration for https://nextjs.org and https://plausible.io analytics.

See it in action at https://next-plausible.vercel.app, and this commit for a real world example.

Important: If you're using a version of next lower than 11.1.0 please use next-plausible@2 to avoid type checking errors (see https://github.com/4lejandrito/next-plausible/issues/25).

Usage

Include the Analytics Script

To enable Plausible analytics in your Next.js app you'll need to expose the Plausible context, <PlausibleProvider />, at the top level of your application inside _app.js:

// pages/_app.js
import PlausibleProvider from 'next-plausible'

export default function MyApp({ Component, pageProps }) {
  return (
    <PlausibleProvider domain="example.com">
      <Component {...pageProps} />
    </PlausibleProvider>
  )
}

If you want to enable Plausible analytics only on a single page you can wrap the page in a PlausibleProvider component:

// pages/home.js
import PlausibleProvider from 'next-plausible'

export default Home() {
  return (
    <PlausibleProvider domain="example.com">
      <h1>My Site</h1>
      {/* ... */}
    </PlausibleProvider>
  )
}

PlausibleProvider Props

Name	Description
domain	The domain of the site you want to monitor.
customDomain	Set this if you use a custom domain to serve the analytics script. Defaults to https://plausible.io. See https://plausible.io/docs/custom-domain for more details.
trackOutboundLinks	Set this to true if you want to enable outbound link click tracking.
trackFileDownloads	Set this to true if you want to enable file download tracking.
trackLocalhost	Set this to true if you want to enable localhost tracking as described here.
manualPageviews	Set this to true if you want to disable automatic pageview events as described here.
exclude	Set this if you want to exclude a set of pages from being tracked. See https://plausible.io/docs/excluding-pages for more details.
selfHosted	Set this to true if you are self hosting your Plausible instance. Otherwise you will get a 404 when requesting the script.
enabled	Use this to explicitly decide whether or not to render script. If not passed the script will be rendered in production environments.
integrity	Optionally define the subresource integrity attribute for extra security.
scriptProps	Optionally override any of the props passed to the script element. See example.

Proxy the Analytics Script

To avoid being blocked by adblockers plausible recommends proxying the script. To do this you need to wrap your next.config.js with the withPlausibleProxy function:

const { withPlausibleProxy } = require('next-plausible')

module.exports = withPlausibleProxy()({
  // ...your next js config, if any
})

This will set up the necessary rewrites as described here and configure PlausibleProvider to use the local URLs so you can keep using it like this:

  <PlausibleProvider domain="example.com">
    ...
  </PlausibleProvider>
}

Note: This will only work if you serve your site using next start. Statically generated sites won't be able to rewrite the requests.

Optionally you can overwrite the proxied script subdirectory and name, as well as the custom domain for the original script:

const { withPlausibleProxy } = require('next-plausible')

module.exports = withPlausibleProxy({
  subdirectory: 'yoursubdirectory',
  scriptName: 'scriptName',
  customDomain: 'http://example.com',
})({
  // ...your next js config, if any
})

This will load the script from /yoursubdirectory/js/scriptName.js and fetch it from http://example.com/js/script.js.

Note: If you are self hosting plausible, you need to set customDomain to your instance otherwise no data will be sent.

Send Custom Events

Plausible supports custom events as described at https://plausible.io/docs/custom-event-goals. This package provides the usePlausible hook to safely access the plausible function like this:

import { usePlausible } from 'next-plausible'

export default function PlausibleButton() {
  const plausible = usePlausible()

  return (
    <>
      <button onClick={() => plausible('customEventName')}>Send</button>

      <button
        id="foo"
        onClick={() =>
          plausible('customEventName', {
            props: {
              buttonId: 'foo',
            },
          })
        }
      >
        Send with props
      </button>
    </>
  )
}

If you use Typescript you can type check your custom events like this:

import { usePlausible } from 'next-plausible'

type MyEvents = {
  event1: { prop1: string }
  event2: { prop2: string }
  event3: never
}

const plausible = usePlausible<MyEvents>()

Only those events with the right props will be allowed to be sent using the plausible function.

Developing

• npm run build will generate the production scripts under the dist folder.