Free website technology checker

How the technology lookup works

1. Enter a domain (no https required).
2. We load the homepage and a few pages on the same site, then match public signals against our fingerprint library: script sources, page HTML, meta tags, cookies, HTTP headers and DNS records.
3. Use results to qualify accounts or jump to a full technology list.

What the checker detects

The lookup covers the TechLeads catalog of 12,000+ technologies, grouped into categories such as CMS, ecommerce platforms, analytics, payment processors, live chat, marketing automation, CRM, JavaScript frameworks and CDNs. Each result links to the technology's page, where you can see how many websites use it and export the list.

Some technologies only run on inner pages or behind a login, and some sites block automated visits, so a lookup can miss tools that are present. If a site cannot be reached, the checker says so instead of returning an empty stack.

Find more sites using the same tech

After lookup, open a technology page or the Shopify store list to export leads. Plans from $29.