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Analytics

Websites Using PostHog

PostHog is an open-source product-analytics platform that bundles event capture, session replay, feature flags and experiments behind a single JavaScript SDK.

The source-code fingerprint

The web snippet bootstraps the library and calls posthog.init("<projectApiKey>") inline before any events are sent to a posthog.com or reverse-proxied ingest host.

Likely false positives: Reverse-proxied and self-hosted installs still ship the posthog.init call, so the inline marker holds; only a renamed global in a custom bundle hides it.

Example websites using PostHog

These domains all contain the posthog.init fingerprint in their homepage source right now. A match is a verified substring of the live page, so confidence is high, the false positives noted above are the main caveat.

• www.mapbox.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_tTbqXcNDitxh5NC2anhMKVLymgbqgWv9TVEmDhwhudBZ', {\n ...
• healthcarecareercollege.edu ...ush([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\r\n posthog.init('phc_UsMnnopDZPIysONlClD9d6tN1Qx9QGzVu4G74WCA0Q2', {\r\n ...
• www.mailerlite.com ...hogLoaded) return;\n window.__mlPosthogLoaded = true;\n posthog.init('phc_drNNBN9pagufCLGRcExwWOS1GaCyhFBvo6vD2gqbMpc', {\n ...
• ngrok.com ...spatchEvent(new Event("ngrok:posthog:flags"));\n\t};\n\n\twindow.posthog.init("phc_mUGMN4JlTzthGcz0XNK0z6NKUqdeQMn7rPRAM3mifjQ", initOpti...
• toggl.com ... if (window?.Cookiebot?.consent?.statistics) {\n posthog.init('phc_PiFIHfmVYQVICbsScOwEv7D9wBwoNvrUFZ1Fq9WxBrp',{\n ...
• www.osano.com ...i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_br5wMjnW6hyOKicG2YNJwMT9JnZVyevmUh5n8YbuoGC', {\n ap...
• whatsform.com ....push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n\t posthog.init('phc_mXelqKq5rXBndPvSBoFXbjTIkBLyqkVAdQ9GSkGqvBM', {api_hos...
• www.hcaptcha.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_fhS1E6ysPjT3r9Q1EO1kehh905Xla2NweqvcLnIYjO3', {\n ...
• inc42.com ...\t\t\t\t}, e.__SV = 1)\n\t\t\t}(document, window.posthog || []);\n\t\t\tposthog.init('phc_8fzRtSfPSSiN9LVrHEU60o2fcpmZEvuSWI3Asw6Ybmp', {\n\t\t\t\tap...
• embedsocial.com ...re created BY init() itself, so before it runs only\n // `posthog.init` exists. Custom events must go through capture() in\n // ...
• gravitywiz.com ...s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_e0iYh91wdWtIhfsXn7ypzlT6SfBZmPjsjCdSyTuTjHD', {\n\t\t\t\tap...
• www.mobiloud.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_CBWKc0UCgO97lBsNr4u47Q9BUqatILguFFnLM1f1Agq',{api_host...
• www.lifehack.org ...._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\nposthog.init("phc_v5iP2kcaHNqH1tFrrR1wR9gDzKNNpdkQSVzFgUWnDji",{"api_hos...
• snapwidget.com ..._SV = 1)\n }(document, window.posthog || []);\n posthog.init('phc_9omgNVMbjydP43toaR8J3DaYzcD4PfVwgjTelC9Qeqg', {\n ...
• pressidium.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_XDvqXVJmqax704iBWtWUZdx7zjOS87wpyWsxu0RhB7l',{api_host...
• ultimatemember.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_HTKebF5zqYSbuHfTvGr6miSXCfvMsFmvNnKzlbWAXrA', {\n ...
• vapi.ai ...,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_oX8UUqsZVs6ifWJRTZ0yNtwTv852ccqRsk09SsZbHHb',{api_host...
• requestmetrics.com ...i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_2c7K958KZBozCfREQo88OeaiVduRfujyYSnIUZ2uJH', {\n api...
• formspree.io ...\t\t}),\n\t\t\t(e.__SV = 1))\n\t})(document, window.posthog || [])\n\tposthog.init('phc_UflWuJ8nEXNrqM7oJAhd1N6RUQzGTmHcBdzVvHuxP4d', {\n\t\tapi_...
• walls.io ... (!bannedPosthogSites.includes(window.location.href)) {\n posthog.init('phc_B9C2E6asD6rTKV74wiRdpzb3JYxXEJGovJI9DxTt3G5',{\n ...
• every.to ...i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init("phc_lFvO2Fyz14e8lIY6fs1ZYQnhYm4B93axCQPJwopb8ao",{"api_hos...
• fooplugins.com ...._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\nposthog.init( "phc_K3h9W70tdTV6bwZLaYX4QJPNUfrvC74a4j5kEHC71SV", {"api_h...
• www.tracify.ai ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_Qi9yVUu2xoYuKMMyBsTOy2y8NYWCbicI2DZwMMZ1mqE',{api_host...
• aaardvarkaccessibility.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_zGRZcA6OkNg2kDTIb0HlpVIumaMiFbu7SvSdi3FcnYH',{\n a...
• www.radicalcandor.com ...sh([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_ALtwi6gaZymDd4bdWffuTaaPuAxujSdenSpNgzYzT9hy', {\n ...
• www.bisg.org ...e.__SV = 1) }(document, window.posthog || []);\r\n posthog.init('phc_9mA7xuJ96NmAImMoWFFwQxkBB0lJKsVfiRQISVf3iDv', {\r\n ...
• www.ushahidi.com ...._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\nposthog.init('phc_fpRL3FRSXZbvO1sOIJ9imbG3hHalpPrjtawEvX7OIec', {"api_ho...
• givebutter.com ... (e.__SV = 1));\n })(document, window.posthog || []);\n\n posthog.init('phc_cwIyuSjjEpyhbDj5a0cRqmSpB5O8CyMDb7ZBiS8MRy7', {\n ap...
• www.xsplit.com ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init('phc_BTy190UDBLL1WCaO51nTI6cBCkUb3lOJXlhuOSOaaNe', {\n ...
• hunter.io ...push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);\n posthog.init("phc_mpHDM5eC3mfHRvi7DW6FSH9YAKw4AVQqluF3THmq6RA", {\n ...

Showing 30 of 84,508 matching sites. Open the full ranked list, inspect the matched source, and export the domain list →

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How this works

SearchWebCode indexes the raw HTML, CSS and JavaScript source of public web pages. To find sites using PostHog we match the literal fingerprint posthog.init, the code PostHog ships, against that index, then verify each match against the raw source. Counts reflect the current index (129,313,463 domains, refreshed monthly, last built August 2026) and grow as we scale toward the whole web. Run the search yourself to see every match, view the full page source for any result, filter by TLD or regex, and export the domain list.

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