Tools

Check any SSL certificate for free — expiry date, issuer, SANs, chain validity, and TLS version. No installation required.

DNS lookup queries the authoritative nameservers for a domain and returns all its DNS records. Here is how to use it and what every record type means.

Test your domain's email deliverability by checking SPF, DKIM, DMARC, MX records, and blacklist status in one scan. Get specific fix recommendations for every issue found.

The backlink crawler discovers web pages that link to your domain, records anchor text and source URLs, and helps you understand and monitor your link profile.

Local rank tracking shows your SERP positions on a geographic grid — see how rankings vary by location and where you are winning or losing against competitors.

Enter keywords and the generator suggests domain names, then checks real-time availability via WHOIS. Find your next domain name without switching tools.

A DNS zone file is the authoritative record of all DNS entries for a domain. Here is what it contains, how it is structured, and how to read BIND format.

Create short links with optional custom slugs and track click analytics. Costs 1 credit to create, 2 credits for a custom slug.

The robots validator checks your robots.txt syntax, tests which crawlers can access which URLs, and validates your sitemap.xml structure.

The SSL decoder reads PEM-format certificates or fetches live certificates from a domain and displays all fields in a readable format.

The TLS auditor connects to your server and tests which protocol versions and cipher suites it accepts, giving you a security grade and specific fix recommendations.

The DNS zone file generator builds complete BIND-format zone files from templates. Fill in your domain and IP details, validate syntax, and export.

SSL and TLS are often used interchangeably but mean different things. TLS is the modern successor to SSL. Here is what you need to know.

DNSSEC adds cryptographic signatures to DNS records, preventing attackers from forging DNS responses. Here is how it works and why it matters.

The SEO Dashboard shows SEO score trends over time for all your monitored domains — compare snapshots, identify regressions, and see which dimensions are dragging scores down.

Use the email deliverability tester to check SPF, DKIM, and DMARC records. Understand what each result means and how to fix common issues.

Blacklists are real-time databases of IP addresses and domains associated with spam, malware, and phishing. Here's how monitoring works and what to do if you're listed.

After changing DNS records, use the propagation checker to see which resolvers have the new values and which are still showing old data.

What each HTTP security header does, what attacks it prevents, and how to add it to your web server or CDN.