When to use CMS / Website Technology Checker
Identify common technology fingerprints visible in a public response.
Use this check when you need a focused answer about the specific signal described above rather than a broad, unexplained SEO score.
Site diagnostics
CMS / Website Technology Checker
Inspect HTML and headers for transparent heuristic signals of common CMS and frontend platforms.
Uses a protected server check
Run the tool
Only public web targets are accepted. Private and reserved network ranges are blocked.
What this check means
Heuristic detection can miss hidden or customised stacks and should be treated as evidence, not certainty.
Because website responses can change by time, location, resolver, or server configuration, treat the result as a current observation of the submitted public target.