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Independent full-stack developer building web and mobile apps, AI tools and automations for teams that care about quality.

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Free tools

Tools that check the real thing.

Check websites, domains and IP addresses, with clear reports and useful next steps. Free, no sign-up.

i.

Domain lookup

Everything about a domain: registration and expiry, DNS, hosting, email, certificate and the services it uses.

Open the toolii.

IP address lookup

Check your public IP or look up any IPv4/IPv6: location, ISP, ASN, routing and network indicators.

Open the tooliii.

Tech stack detector

What any website is built with: framework, CMS, hosting, analytics, payments and more, with the evidence for each.

Open the tooliv.

DNS propagation checker

Has your DNS change spread yet? What 16 public DNS services in different countries answer right now.

Open the toolv.

Link preview tester

How your link looks when shared on X, LinkedIn, Facebook, WhatsApp, Slack and Discord, and what to fix.

Open the toolvi.

Website health check

Security, search, mobile and speed for any page, plus Google’s PageSpeed scores.

Open the toolvii.

Whole-site audit

Check linked pages for broken links, missing titles and descriptions, slow server responses and redirect chains.

Open the toolviii.

Real-user speed history

How fast your site has really been for Chrome visitors over the past nine months, on phones and computers.

Open the toolix.

Email deliverability check

Why your emails land in spam: MX, SPF, DKIM, DMARC, MTA-STS and blocklists, from live DNS.

Open the toolx.

Mobile app readiness check

Can your web app ship to the App Store and Google Play? Manifest, icons, offline support, app links and store review risks.

Open the tool