Free website checks, no account needed
Type an address, get an answer. No account, no email, no plugin, nothing to install — and nothing stored afterwards. Each of these reads only what your website already shows the public, and says plainly what it cannot see.
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WordPress Theme Detector
Find the theme and the publicly visible plugins behind any WordPress site.
Website Technology Checker
What platform, frameworks, analytics and hosting a site is built on.
Website Compatibility Checker
Find out what your site runs and whether we can manage it. The original free tool.
Being found and read
What search engines and AI assistants are allowed to fetch from your site, and what they understand when they do.
AI Crawler Checker
Can ChatGPT, Claude and Perplexity fetch your pages? Read straight from your robots.txt.
Robots.txt Checker
Read your robots.txt back in plain words, with the syntax mistakes pointed out.
Schema Markup Checker
Find the structured data on a page and the required properties it is missing.
How your links look
What people see when your address is pasted into a chat, a feed or a message.
How your site is served
The headers and redirects between a visitor typing your address and the page arriving.
How these work
- You type an address. We fetch the public page and the robots file, the same two things any search engine fetches, and nothing else.
- Nothing is changed on your website. These only read, and they read only what is already public — no password, no plugin, no connection.
- Nothing is stored. The address is not saved, no report is kept, and there is no list anywhere of which sites have been checked.
- Where something cannot be seen from outside, the tool says so rather than guessing. An unknown is never shown as a pass.
If you want the work done rather than diagnosed
These checks are free and stay free, with the whole answer on the page. If what you find is more work than you want to do by hand, that is what we sell.