The StackOptic Blog
Practical guides on identifying website technologies, SEO and GEO, web performance and lead generation — from the team behind StackOptic.
How to Tell If a Website Is Built With Hugo
Hugo is one of the fastest static-site generators. Detect it via the generator meta tag reading 'Hugo', its fully static HTML output and the absence of a client-side framework runtime.
How to Tell If a Website Uses Bunny Fonts
Bunny Fonts is a privacy-first, GDPR-friendly drop-in replacement for Google Fonts. Detect it via fonts.bunny.net stylesheet links and font-file requests.
How to Tell If a Website Uses Wordfence
Wordfence is the most popular WordPress security plugin. Detect it via /wp-content/plugins/wordfence/ assets, wfwaf and wordfence cookies, and its branded block pages.
How to Tell If a Website Uses Bulma
Bulma is a popular, lightweight, Flexbox-based CSS framework. Detect it via its distinctive semantic class names (columns, is-primary, navbar) and the bulma.css stylesheet.
How to Tell If a Website Uses Rank Math
Rank Math is a fast-growing WordPress SEO plugin. Detect it via its '<!-- Rank Math WordPress SEO plugin -->' comments, the seo-by-rank-math plugin assets and its structured-data output.
How to Tell If a Website Uses Swiper
Swiper is the most popular modern slider/carousel library. Detect it via swiper- class names (swiper, swiper-slide, swiper-wrapper), the Swiper global and swiper-bundle assets.
How to Tell If a Website Uses ConvertKit (Kit)
ConvertKit (now Kit) is the email platform for creators. Detect it via f.convertkit.com form embeds, the ck.5.js script, data-uid form attributes and convertkit.com / kit.com endpoints.
How to Tell If a Website Uses Segment
Segment is a customer-data platform that routes events to other tools. Detect it via the cdn.segment.com/analytics.js script, the window.analytics object, api.segment.io beacons and ajs_ cookies.
How to Tell If a Website Uses Contentful
Contentful is a leading headless CMS. Detect it via images.ctfassets.net asset URLs, cdn.contentful.com API calls and the space and asset IDs embedded in those URLs.
How to Tell If a Website Uses Adyen
Adyen is an enterprise payment platform behind many global brands. Detect it via the checkoutshopper-live.adyen.com scripts, the AdyenCheckout global and Adyen Web Components iframes.
How to Tell If a Website Uses Tidio
Tidio is an affordable live-chat and chatbot tool for SMBs and ecommerce. Detect it via the code.tidio.co/<publicKey>.js script, the window.tidioChatApi object and tidioChatCode.
How to Tell If a Website Uses Inspectlet
Inspectlet records sessions and builds heatmaps. Detect it via the cdn.inspectlet.com/inspectlet.js script, the global __insp array and hn.inspectlet.com tracking.
How to Tell If a Website Uses Mollie
Mollie is a popular European payment service provider. Detect it via the js.mollie.com/v1/mollie.js script, the Mollie components and mollie.com / mollie.nl checkout and API requests.
How to Tell If a Website Uses Stamped
Stamped (Stamped.io) is a reviews and loyalty platform for ecommerce. Detect it via stamped.io widget assets, the stamped-prefixed markup (stamped-main-widget) and its review structured data.
How to Tell If a Website Uses Smartlook
Smartlook records web and mobile sessions with heatmaps and funnels. Detect it via the web-sdk.smartlook.com recorder script, the global smartlook object and its cloud endpoints.
How to Tell If a Website Uses LogRocket
LogRocket combines session replay with front-end error and performance monitoring. Detect it via the cdn.logrocket.io script, the window.LogRocket object, LogRocket.init() and lr-ingest beacons.
How to Tell If a Website Uses unpkg
unpkg is a fast public CDN for everything on npm. Detect it via assets loaded from unpkg.com/<package>@<version>/ in script, link and module import URLs.
How to Tell If a Website Uses StatCounter
StatCounter is a veteran web-analytics tool. Detect it via the sc_project / sc_security globals, the statcounter counter.js script and the c.statcounter.com image beacon.
How to Tell If a Website Is Built With Kajabi
Kajabi is an all-in-one platform for online courses and creator businesses. Detect it via kajabi-cdn.com assets, mykajabi.com domains, Kajabi page markup and its hosted checkout.
How to Tell If a Website Uses Outbrain
Outbrain is a major native-advertising and content-recommendation network. Detect it via the widgets.outbrain.com/outbrain.js loader, the obApi/OB globals and 'Recommended by Outbrain' widgets.
How to Tell If a Website Uses Razorpay
Razorpay is India's leading payment gateway. Detect it via the checkout.razorpay.com/v1/checkout.js script, the global Razorpay constructor and api.razorpay.com requests.
How to Tell If a Website Uses WP Rocket
WP Rocket is the leading premium WordPress caching plugin. Detect it via its 'Powered by WP Rocket' HTML comment, data-rocket lazy-load attributes and /wp-content/plugins/wp-rocket/ assets.
How to Tell If a Website Uses Okendo
Okendo is a customer-marketing and reviews platform for Shopify DTC brands. Detect it via okendo.io assets, oke-prefixed review markup and its structured-data review output.
How to Tell If a Website Uses Zendesk
Zendesk is a leading customer-support suite. Detect its Web Widget via static.zdassets.com/ekr/snippet.js, the window.zE function, zESettings and *.zendesk.com help-centre and chat traffic.