# WebDetector.online > WebDetector.online provides free public-signal tools for website technology research, HTTP diagnostics, DNS inspection, crawler directives, domain registration data, and page metadata. Canonical site: https://webdetector.online ## Primary tool - [Website CMS Detector](https://webdetector.online/): Detect CMS platforms, website builders, frameworks, WordPress themes, plugins, and visible technology signals. ## Developer tools - [Redirect & HTTP Status Checker](https://webdetector.online/redirect-http-status-checker): Trace HTTP status codes, redirect hops, response timing, and final destination URLs. - [DNS Lookup Checker](https://webdetector.online/dns-lookup-checker): Inspect public A, AAAA, CNAME, MX, NS, TXT, and SOA records. - [HTTP Headers Checker](https://webdetector.online/http-headers-checker): Review content, caching, server, CORS, and browser security response headers. - [Robots.txt Checker](https://webdetector.online/robots-txt-checker): Fetch and parse robots directives, sitemaps, and crawler path rules. - [WHOIS / Domain Information Checker](https://webdetector.online/whois-domain-information-checker): Query public RDAP registration, registrar, status, nameserver, and DNSSEC data. - [Open Graph & Meta Tag Checker](https://webdetector.online/open-graph-meta-tag-checker): Audit SEO metadata, canonical tags, Open Graph fields, Twitter cards, and social previews. ## Site information - [Website Guides](https://webdetector.online/guides): Practical guides for CMS detection, HTTP behavior, redirects, crawler controls, domain data, and technical website diagnosis. - [FAQ](https://webdetector.online/faq) - [About](https://webdetector.online/about-us) - [Contact](https://webdetector.online/contact-us) - [HTML Sitemap](https://webdetector.online/sitemap) - [XML Sitemap](https://webdetector.online/sitemap.xml) - [Robots.txt](https://webdetector.online/robots.txt)