Free website security check
One instant scan covers the three things that matter most for a small site: your SSL/TLS certificate, your HTTP security headers, and how fast your server responds. Enter a URL and get a plain-language report of what to fix first.
Free, read-only, no signup. See our methodology.
In short
This is the all-in-one scan. It opens a normal HTTPS connection to your site — the same kind a browser makes — validates the certificate, reads your security headers, and measures response time. Nothing is stored, nothing is fabricated, and if a check can’t run we report it as unknown rather than guessing.
What the free check covers
A single scan runs every check in one pass and weights each finding by its real-world impact. Here is exactly what you get.
SSL / TLS & HTTPS
We connect over TLS, validate that the certificate is trusted and verifiable, and confirm the site is actually delivered over HTTPS.
Security headers
We look for HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options and Referrer-Policy, and show which are present and which are missing.
Response time
We measure real Time To First Byte and note whether text compression (Brotli or Gzip) is active on the response.
Why these checks matter
The three areas map onto the three questions every visitor’s browser silently asks. Is this connection private? A valid TLS certificate and enforced HTTPS answer yes — without them, data travels in the clear and modern browsers show a “Not secure” warning. Is this page trying to protect me? Security headers tell the browser to force HTTPS, block malicious framing, refuse to guess file types, and limit what scripts can run. Is it fast enough to stay? A slow first byte delays everything the visitor sees and is one of the signals search engines factor into performance.
Getting these fundamentals right closes the gaps that get small sites into trouble long before anyone attempts anything sophisticated.
How to fix the common issues
- No HTTPS or an untrusted certificate. Install a certificate (a free one from Let’s Encrypt is enough for most sites) and add a permanent 301 redirect from HTTP to HTTPS so every visitor lands on the secure version.
- Missing security headers. These are added once in your server or application config. Start with the headers that carry the most weight — HSTS and Content-Security-Policy — then fill in the rest.
- Slow Time To First Byte. Enable server-side caching, put a CDN in front of your site, and make sure Brotli or Gzip compression is switched on. TTFB above roughly 600 ms is worth investigating.
Learn what each result means
Website Security Basics: Where to Start
A beginner-friendly roadmap to securing a website, in the order that actually matters.
Read guide →HTTP Security HeadersHTTP Security Headers: The Complete Checklist
Every important HTTP security header explained, what it protects against, and a copy-paste starting configuration.
Read guide →FundamentalsHow to Read a Website Security Scan
What the scores and findings in a security report mean, and how to prioritize the fixes that matter.
Read guide →Frequently asked questions
Is the website security check really free?
Yes. The scan is free, requires no account or email, and is read-only. It reads the same public response your browser receives when it loads a page, and we don’t store the result.
What does the free security check cover?
It validates HTTPS and the TLS certificate, checks for HTTP security headers such as HSTS, CSP, X-Frame-Options, X-Content-Type-Options and Referrer-Policy, measures Time To First Byte, and notes compression and server signals. The methodology page lists every check and its weight.
Is running the scan safe for my site?
Yes. The scan is read-only. It does not send attack payloads, attempt logins, or probe behind authentication — it only reads publicly available response headers and TLS details.