Website tools answer practical questions about how a site is built and how it performs. They are handy when you are checking your own site after a change, researching a competitor or looking at a site before you start working on it.
Which tool to use
- Speed Test checks how quickly a page responds and loads. Use it after changes to your theme, plugins, hosting or images to see whether performance moved in the right direction.
- CMS Detector identifies the platform a website is built on, such as WordPress, Shopify or Wix. Use it to learn how other sites are built, or to confirm what a client's site runs on before you plan work on it.
Common workflows
After a site change. Run the Speed Test on your homepage and on a key template page before and after the change, so you compare like with like. If a page has become slower, look at large images, new scripts and third-party embeds first.
Researching a site. Use the CMS Detector to see which platform the site uses, then look at its domain background with the WHOIS Lookup and its certificate with the SSL Checker.
A wider page review. Speed is only one part of page health. The SEO Checker also looks at server response time, HTML size, compression and the mobile viewport, alongside search basics, content and AI readiness.
Frequently asked questions
Why do speed results change between tests?
Page speed depends on network conditions, server load, caching and third-party scripts, so results vary from one run to the next. Run a few tests and look at the pattern rather than a single result.
How can a tool tell which CMS a site uses?
Platforms usually leave recognizable traces in a page's HTML and response headers, such as file paths, script names or generator tags. CMS detection works by looking for signals like these. Some sites remove or hide them, so a platform cannot always be identified.
Can I use these tools on any website?
Yes, as long as the page is publicly accessible. Pages behind a login cannot be checked.