Websites Using Square

Square provides payments and commerce tools, including a web payments SDK.

140,045 sites detected across 129,313,463 indexed domains refreshed monthly · August 2026

The source-code fingerprint

web.squarecdn.com Search all 140,045 results →

Square's Web Payments SDK loads from web.squarecdn.com (js.squareup.com hosts the legacy payment form). Matching the SDK host finds sites that actually take Square payments, not pages that merely link to squareup.com.

Likely false positives: Redirect-style Square checkout links (square.link) never appear in storefront source, so casual Square sellers are undercounted.

Example websites using Square

These domains all contain the web.squarecdn.com 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.galvestonhistory.org ... SEO Premium plugin. -->\n\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel='dns-prefetch' href='//fonts.googleapis.com' ...
www.ttpbooks.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.iheartjane.com ...-E7bBL_4jkDu0l61NXYQFPg","squareWebPaymentsSdkUrl":"https://web.squarecdn.com/v1/square.js","strongholdEnv":"live","strongholdIntegration...
www.artavita.com ...l="stylesheet" type="text/css">\n\n <script src="https://web.squarecdn.com/v1/square.js"></script>\n \n <meta name="csrf-param" co...
www.paschalsatlanta.com ...Z0","squareEnvironment":"production","squareJsUrl":"https://web.squarecdn.com/v1/square.js"},"RestaurantActionBar:8272":{"__typename":"Re...
thebridgehead.ca ...-width, initial-scale=1" /><link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel='dns-prefetch' href='//fonts.googleapis.com' ...
philzcoffee.com ...counts.google.com/gsi/client"></script><script src="https://web.squarecdn.com/v1/square.js"></script><script src="https://assets.philzcof...
savingcranes.org ... / Yoast SEO plugin. -->\n\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel="alternate" title="oEmbed (JSON)" type="appli...
badaxethrowing.com ... / Yoast SEO plugin. -->\n\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel="alternate" type="application/rss+xml" title=...
www.71above.com ...Z0","squareEnvironment":"production","squareJsUrl":"https://web.squarecdn.com/v1/square.js"},"RestaurantActionBar:12567":{"__typename":"R...
moultonmuseum.org ...th WordPress SEO plugin --><link rel='dns-prefetch' href='//web.squarecdn.com' /><link rel='dns-prefetch' href='//plausible.io' /><link r...
palestineaction.org ... / Yoast SEO plugin. -->\n\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel='dns-prefetch' href='//fonts.googleapis.com' ...
www.traveldocs.com ...\r\n<![endif]-->\r\n<script type="text/javascript" src="https://web.squarecdn.com/v1/square.js"></script>\r\n<script type="text/javascript">\r\nc...
www.bustbright.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.latinobookawards.org ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.buxtonmuseum.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
arbraska.com ...esheet"> \n\n\n <script type="text/javascript" src="https://web.squarecdn.com/v1/square.js"></script>\n\n\n ...
topropebelts.com ...\t\t\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel='dns-prefetch' href='//challenges.cloudflare....
www.mtbaldyresort.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.roundpeak.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.pglglasgow.org.uk ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
charlestonlibrarysociety.org ...ms meta | 0.10ms boot -->\n\n<link rel='dns-prefetch' href='//web.squarecdn.com' />\n<link rel='dns-prefetch' href='//fonts.googleapis.com' ...
www.portoraroyal.co.uk ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.lbk.org.uk ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.atkinspark.com ...Z0","squareEnvironment":"production","squareJsUrl":"https://web.squarecdn.com/v1/square.js"},"RestaurantActionBarLink:1386112":{"__typena...
www.nevislandscape.co.uk ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...
www.pickapeppa.com ...nt-weight: 100 !important;\n}\n\n</style>\n<script src="https://web.squarecdn.com/v1/square.js"></script></head>\n<body>\n<section class="wrapp...
afroamcivilwar.org ...max-image-preview:large'/>\n<link rel='dns-prefetch' href='//web.squarecdn.com'/>\n<link rel='dns-prefetch' href='//fonts.googleapis.com'/>...
www.brodard.net ...Z0","squareEnvironment":"production","squareJsUrl":"https://web.squarecdn.com/v1/square.js"},"RestaurantActionBarLink:1354224":{"__typena...
www.athenswelcomecenter.com ...tmysite.com';\n window.SQUARE_WEB_PAYMENTS_SDK = 'https://web.squarecdn.com/v1/square.js'\n window.PUBLIC_SQUARE_URL_BASE = 'squareup...

Showing 30 of 140,045 matching sites. Open the full ranked list, inspect the matched source, and export the domain list →

Related technologies

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How this works

SearchWebCode indexes the raw HTML, CSS and JavaScript source of public web pages. To find sites using Square we match the literal fingerprint web.squarecdn.com, the code Square 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.

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