HeaderGuard is a free security-headers scanner for any public website: it checks HTTPS and HSTS, Content-Security-Policy, framing, MIME sniffing, Referrer-Policy, Permissions-Policy, cross-origin isolation and cookie flags. You get a 0–100 score, an A+ to F grade, per-header find
Prices and medians update for the tier you select.
Ranked by how closely each one matches headerguard's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.