Web product analytics installation

Choose an installation method

Required

You can either add the JavaScript snippet directly to your HTML or install the JavaScript SDK via your package manager.

Add this snippet to your website within the <head> tag. This can also be used in services like Google Tag Manager:

HTML
<script>
    !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.async=!0,p.src=s.api_host.replace(".i.posthog.com","-assets.i.posthog.com")+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="init capture register register_once register_for_session unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled getFeatureFlag getFeatureFlagPayload reloadFeatureFlags group identify setPersonProperties setPersonPropertiesForFlags resetPersonPropertiesForFlags setGroupPropertiesForFlags resetGroupPropertiesForFlags resetGroups onFeatureFlags addFeatureFlagsHandler onSessionId getSurveys getActiveMatchingSurveys renderSurvey canRenderSurvey getNextSurveyStep".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
    posthog.init('<ph_project_token>', {
        api_host: 'https://us.i.posthog.com',
        defaults: '2026-01-30'
    })
</script>

Install the PostHog JavaScript library using your package manager. Then, import and initialize the PostHog library with your project token and host:

npm install posthog-js
yarn add posthog-js
pnpm add posthog-js

JavaScript
import posthog from 'posthog-js'

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

2
Send events
Recommended
Once installed, PostHog will automatically start capturing events. You can also manually send events to test your integration:
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

Web product analytics installation

Choose an installation method

Send events

Next steps

Community questions

Was this page useful?