WebToolBench is a free collection of browser-based checkers for people who look after websites, domains and email. There's nothing to install and no account to create. Type a domain, run the check, and read what the result means.

Most lookup tools stop at the raw output. WebToolBench adds a short, plain-English explanation under each result, so you can see whether a record is wrong, merely unusual, or fine.

What you can check:

• DNS Checker: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA and SRV records, queried from the domain's authoritative nameservers rather than a cached resolver.

• SSL Certificate Checker: expiry date, issuer, the names the certificate covers, and whether the chain is complete.

• Email Deliverability Checker: SPF, DKIM, DMARC and MX in one pass, with a score and a list of what is missing.

• Redirect Checker: every hop in a redirect chain with its status code, useful after a move to HTTPS or a new domain.

• Robots.txt Tester: whether a given URL is allowed or blocked for a given crawler, and which rule decides it.

• HTTP Header Checker, WHOIS Checker, Sitemap Checker and an On-Page SEO Checker.

There are also small developer utilities, including .htaccess and .htpasswd generators, a UUID generator and a hash generator.

All tools are free with no usage limits. Input isn't stored.