DomainLens Pro

Scan the site you're on with DomainLens Pro: grade, category scores and top security findings, on demand.

DomainLens Pro grades the security of the site you're on in one click. Click the toolbar icon (or press Alt+Shift+D) and DomainLens Pro runs its full scan of that domain: identity and registration, DNS, email authentication (SPF, DKIM, DMARC, MTA-STS), TLS and certificates, security headers, web stack, exposure, infrastructure and reputation. You get: • A letter grade and score out of 100, with a confidence level • Scores for all 7 categories, and exactly why a grade was capped • The top findings, worst first, with the details one tap away • Every section in the same order as the DomainLens Pro apps and web app: Overview, Identity, DNS, Email, TLS / Certificates, Headers, Web Stack, Exposure, Infrastructure and Intel • DNS lookups run in your browser (address, mail, name server, SPF/TXT and CAA records), straight to Cloudflare's and Google's public DNS-over-HTTPS resolvers; only the checks a browser can't do run on the DomainLens Pro server • Right-click any link and choose "Scan Link with DomainLens Pro" • Copy a summary, download the JSON, or open the full report in the web app • Your scan history: recent scans right in the popup, and a full History page to filter, reopen or rescan them — the same history you see on the web and in the iPhone, iPad, Mac and Android apps • All 10 DomainLens Pro themes, including a color-blind-safe palette • English, 中文, हिन्दी, Español, العربية (right-to-left), Français, Deutsch Private by design • Nothing is scanned until you click. There is no background scanning. • Only the host name of the site you choose is sent (to the DomainLens Pro API, and to the public DNS resolvers for its DNS lookups) — never the page, its contents, your history or cookies. • No content scripts: the extension never runs inside the pages you visit. • Minimal permissions: activeTab, storage, contextMenus and identity (only to open the DomainLens Pro sign-in window), and host access only to the DomainLens Pro API. Besides the API, the extension connects only to Cloudflare's and Google's public DNS-over-HTTPS resolvers (cloudflare-dns.com, dns.google) for DNS lookups, never to the sites you scan. • Your sign-in stays in this browser's local storage, is never synced, and can be revoked any time (Sign Out, or Settings → Connected Extensions in DomainLens Pro). • Saving scans to your history is on by default and can be turned off in the extension's settings. • No analytics, ads or third-party code. Getting started 1. Click the DomainLens Pro icon and choose Sign In. Sign in with your DomainLens Pro account (free: Apple, Google, Microsoft, GitHub, a passkey or an email code) and choose Allow. 2. Visit any site and click the DomainLens Pro icon. 3. Your scans sync to your DomainLens Pro history across the web, iPhone, iPad, Mac and Android. DomainLens Pro is also available for iPhone, iPad and Mac on the App Store, for Android on Google Play, and on the web. Learn more at domainlenspro.com.