Security scanner · Free · No signup

Your domain's
trust score. Instant.

Enterprise buyers check your security headers before signing contracts. Investors google your domain before wiring money. TrustSignal shows you what they see — and exactly how to fix it.

Enter domain · Get score · Done

Example scan

85/ 100
GradeB
HTTPS
HSTS Header
CSP
Permissions Policy
Scan yours

Security is your competitive edge

The businesses that own the next decade won't just be the fastest — they'll be the most trusted.

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10 security checks

HTTPS, HSTS, CSP, clickjacking protection, MIME sniffing, referrer policy, permissions policy, and privacy compliance — all in one scan.

Results in seconds

Enter a domain and get a full report in under 10 seconds. No installs, no accounts, no browser extensions required.

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A–F grade system

Each check is weighted by security impact. Your final grade reflects how enterprise buyers and security-conscious users perceive your site.

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Know before they do

B2B buyers and investors run security checks before signing deals. See what they see — and fix it before it costs you a contract.

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Fix-it descriptions

Every failed check includes a plain-English explanation of what it protects against and why it matters to your users.

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Scan competitors too

Run any domain. Use TrustSignal to benchmark your security posture against competitors and prove your advantage to customers.

Scan a domain

Enter any domain — yours, a competitor's, or a vendor you're evaluating. Get a full security report in seconds.