Is your site's basic security setup safe?
Many real breaches start with basic misconfigurations like missing security headers or weak cookie attributes. Enter a URL and we'll check for risk points using only information your server already makes public β for free.
Sound familiar?
Without a dedicated security person, there's no easy way to know if your site's default settings are safe. Terms like "security headers" and "cookie attributes" feel unfamiliar, and you're worried you'll only find out about a problem after you've already been breached.
The Security Header Checker automatically checks HTTP security headers, cookie security attributes, and whether HTTPS is enforced from a single URL β and explains why each issue matters and how to fix it.
How to use it
Recommended for
- Solo founders and freelancers running a site without a dedicated security person
- Developers who want to check basic security settings before launching a new service
- Agencies who need a quick read on a client site's security posture
- Site operators handling customer data who are unsure about their cookie security settings
Frequently asked questions
Does this tool actually attempt to hack my site?
No. It never performs attack actions like SQL injection or brute-force attempts. It's a safe diagnostic that only reads the header and cookie information your server already responds with publicly when a browser connects.
If I get a low grade, will I definitely get hacked?
No. This check is a reference-only result based solely on publicly available information, and it may not guarantee or catch every vulnerability. A lower grade simply means more risk factors were found.
Why is the HTTPS item treated as the most critical?
If HTTPS isn't enforced, all communication β including login credentials β can be transmitted unencrypted, so we call this out separately as needing immediate action.
How long does the check take?
It usually finishes in under 10 seconds, and the same URL returns faster from a 24-hour cache.
Is sensitive information like cookie values stored?
No. We only check cookie names and whether security attributes are set β never cookie values or the page's source content.