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Facebook Pixel in Homepage Source

The Meta (Facebook) Pixel tracks conversions and builds audiences for Facebook and Instagram ad campaigns.

The source-code fingerprint

The pixel library fbevents.js is loaded from connect.facebook.net and initialized with fbq('init', <id>).

Likely false positives: Matching the library specifically (not just connect.facebook.net) keeps this to real Pixel installs, not other Facebook widgets.

Stored source examples for Facebook Pixel

These examples matched fbevents.js in stored homepage source when the query was sampled on 2026-10-14. The sites may have changed since the source was captured. A match establishes a source reference; it does not confirm an active installation or code execution.

• www.zdnet.com ...ument,'script',\n 'https://connect.facebook.net/en_US/fbevents.js');\n fbq('set', 'autoConfig', false, '789754228632403...
• www.businessinsider.com ...0%2Co.src%3D%22https%3A%2F%2Fconnect.facebook.net%2Fen_US%2Ffbevents.js%22%2C(a%3Dt.getElementsByTagName(r)%5B0%5D).parentNode.inse...
• www.cnet.com ...ument,'script',\n 'https://connect.facebook.net/en_US/fbevents.js');\n fbq('set', 'autoConfig', false, '789754228632403...
• developers.facebook.com ...ndow,\ndocument,'script','https://connect.facebook.net/en_US/fbevents.js');\n\nfbq('init', '675141479195042');\nfbq('track', "PageView"...
• lit.link ...cript',\n 'https://connect.facebook.net/en_US/fbevents.js');\n fbq('init', '1706964916132305');\n ...
• lifehacker.com ... document, 'script', '//connect.facebook.net/en_US/fbevents.js');\n fbq('init', '37418175030');\n ...
• mashable.com ... document,'script','//connect.facebook.net/en_US/fbevents.js');\n fbq('init', '1453039084979896');\n ...
• giphy.com ...,\\n 'https://connect.facebook.net/en_US/fbevents.js');\\n fbq('init', '1046823163573770');\\...
• speakerdeck.com ...dow, document,'script', 'https://connect.facebook.net/en_US/fbevents.js');\n\n fbq('init', '2893765844191276');\n fbq('track...
• www.epi.org ...indow,document,'script','https://connect.facebook.net/en_US/fbevents.js');fbq('init', '322603365198568');fbq('track', 'PageView');<...
• 500px.com ...ment(n)).async=!0,a.src="https://connect.facebook.net/en_US/fbevents.js",(f=t.getElementsByTagName(n)[0]).parentNode.insertBefore(a...
• patronite.pl ...indow,document,'script','https://connect.facebook.net/en_US/fbevents.js');fbq('init','609911026500637');fbq('track','PageView');}})...
• www.pcmag.com ...}(window, document, 'script', '//connect.facebook.net/en_US/fbevents.js');\n fbq('init', '454758778052139');\n ...
• civileats.com ...ow, document,'script',\n 'https://connect.facebook.net/en_US/fbevents.js');\n fbq('init', '221062886306986');\n fbq('track', 'PageView...
• ahrefs.com ...ocument,'script',\n 'https://connect.facebook.net/en_US/fbevents.js');\n fbq('init', 1511271639109289);\n fbq('track', ...
• www.redeyerecords.co.uk ...document,'script',\r\n 'https://connect.facebook.net/en_US/fbevents.js');\r\n fbq('init', '376206132835209');\r\n fbq('track', '...
• 365degreetotalmarketing.com ...ment,\n 'script',\n 'https://connect.facebook.net/en_US/fbevents.js'\n );\n\n fbq(\n 'init',\n '3649861335061348'\n );\n\n fb...
• www.magiclinks.com ...ocument,'script',\n 'https://connect.facebook.net/en_US/fbevents.js');\n\n fbq('init', '2447073478745909');\n fbq('track...
• nextweekend.jp ...ow, document,'script',\n\t'https://connect.facebook.net/en_US/fbevents.js');\n\tfbq('init', '203176681921278');\n\tfbq('track', 'PageView...
• www.indiegogo.com ...ndow,\n document,'script','//connect.facebook.net/en_US/fbevents.js');\n\n const fbclid = new URLSearchParams(location.search).g...
• link.me ...erySelector('script[src="https://connect.facebook.net/en_US/fbevents.js"]')\n) {\n var metaPixelScript = document.createElement("scr...
• www.online-pen.de ...cript',\n 'https://connect.facebook.net/en_US/fbevents.js');\n\n // Disable Meta's Automatic Configurati...
• www.gauravbambralphotography.com ...ow, document, 'script', 'https://connect.facebook.net/en_US/fbevents.js');\n\t\t\t\tfbq('init', '');\n\t\tfbq('track', 'PageView');\n\t}\n\n\t\t\t...
• www.moirageary.com ... document,'script','https://connect.facebook.net/en_US/fbevents.js');\n\n\nfbq('init', '1616342105294321', {"ct":"","country":nul...
• www.easigrass.com ...indow,document,'script','https://connect.facebook.net/en_US/fbevents.js');fbq('init','123282580807276');fbq('track','PageView')</sc...
• scinstitute.org ..., document,'script',\r\n 'https://connect.facebook.net/en_US/fbevents.js');\r\n fbq('init', '1543681262551707');\r\n fbq('track', 'Pag...
• www.mewshop.com ...dow, document,'script',\n'https://connect.facebook.net/en_US/fbevents.js');\nfbq('init', '572217545222140');\nfbq('track', 'PageView')...
• streamily.com ... "script",\n "https://connect.facebook.net/en_US/fbevents.js",\n );\n fbq("init", "542739054102687");\n fbq(...
• healthcarecareercollege.edu ...ow, document,'script',\r\n'https://connect.facebook.net/en_US/fbevents.js');\r\nfbq('init', '241459328544407');\r\nfbq('track', 'PageView...
• www.braidsmusic.com ...dow, document,'script',\n'https://connect.facebook.net/en_US/fbevents.js');</script><script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l]....

Showing 30 checked source examples. The headline is estimated matches. Open the full ranked list, inspect the matched source, and export the domain list →

Related technologies

How this works

The headline distinguishes candidate upper bounds (index prefilter), estimated matches (a projection from checked samples) and verified matches (an exact count established by the engine). The index contains 131,219,565 homepage documents, one homepage per hostname, including subdomains. The source index was promoted 2026-09-22 and follows a quarterly rebuild schedule. The sample date is when this query was checked against the stored index, not a new crawl of each example site.

Comparing adoption across tools? The Web Technology Adoption Report ranks the most common tags in the index side by side.