Check if your website has the right security settings. We'll explain what each one does in plain English.
Security headers are instructions your website sends to visitors' browsers. They tell the browser how to behave and what to allow, helping protect your visitors from various attacks.
Think of them as security rules that lock doors hackers might try to use. Without them, your website and visitors are more vulnerable to attacks.
Came from the securityheaders.com API? Snyk discontinued it in April 2026. We're a free drop-in with the same A+→F grades — see the one-line migration guide, or read the API docs.
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