Free public technology checker

See what powers
any website.

StackCheck examines public homepage signals to identify commerce platforms, analytics, payments, marketing, support and infrastructure technologies.

Run a lookup

Enter a public website

We fetch only the public homepage, inspect a bounded response and label the evidence behind every detection.

Protected by Cloudflare Turnstile. Cloudflare’s privacy and terms apply.

Designed for commerce operators

Fast signals.
Clear limits.

01

Public evidence

Each finding includes its signal source and a plain-language evidence summary.

02

Commerce focused

We prioritise storefront, payment, retention, analytics, support and delivery technologies.

03

Privacy conscious

StackCheck visits a public homepage. It does not log in, bypass access controls or collect visitor identities.