It's free, continue with GoogleFree tools · Instant check
What is this site built with?
The CMS, with the proof.
Type any website. We read its homepage the way a browser receives it and tell you the CMS or platform, the framework, plugins and tools, and what each one means for speed, security and AI visibility.
Reads one public page and its response headers. Nothing is stored and nothing is sent to the site except an ordinary page request.
The free plan
One check is a clue.
The free plan is the whole picture.
- A full audit of up to 50 pages, every week
- The three fixes that win the most enquiries, with the evidence
- Speed, security, AI visibility, tracking and the enquiry path in one report
- Connect Google Analytics, Search Console and Clarity to see what visitors really do
- One website free, or five client sites for an agency. No card.
Questions people ask
How do you know which CMS a site uses?
Every platform leaves fingerprints: a generator tag, folder names such as /wp-content/, a response header only that platform sends, or a cookie name. We only say "confirmed" when the platform names itself or two independent signals agree, and we show you each signal so you can check it in the page source.
Why does the CMS matter?
It decides what can be fixed and by whom. A WordPress site needs plugin and core updates; a Wix or Squarespace site cannot change its server settings; a JavaScript app can be invisible to AI crawlers. Knowing the platform tells you which fixes are a settings change and which are a developer job.
What if it says nothing was found?
Some sites are custom builds or hide their fingerprints deliberately. We would rather say we could not tell than guess.
More instant checks
Stop guessing.
See what stops visitors enquiring.
Create your free PostCliq account and get your full website audit in minutes.