How to find out what any website is built with
Four public signals reveal the platform, plugins and tools behind any website, and how to check them by hand.
1 min read
Seen a speaker website you love and wondered what it is built with? The fastest way is to paste the address into our free analyzer. If you are curious how that works, or want to check by hand, here are the signals it looks for.
1. The page source
Right-click the page and choose View Page Source. Many platforms announce themselves in a <meta name="generator"> tag, and file paths give others away: /wp-content/ means WordPress, for example.
2. Script and stylesheet addresses
Embedded tools load their code from their own servers. A script from googletagmanager.com means Google Tag Manager, and a booking widget usually loads from the scheduling tool’s domain.
3. Response headers and cookies
Your browser’s developer tools (Network tab) show the headers each response carries. Hosting providers and CDNs often add their own, such as server: cloudflare, and many tools set cookies with recognisable names.
4. DNS records
A domain’s public DNS records reveal services that never appear on the page: MX records point to the email provider, and TXT records often contain verification codes for marketing and email tools.
What these methods miss
- Tools that only load after a click, a scroll or a login.
- Back-office software such as CRMs and invoicing tools.
- Sites that deliberately hide or strip identifying details.
Our analyzer checks all four signals at once against more than 7,600 open-source fingerprints, and you can see the results for top speakers in the gallery.