Best Free Website Scanners (2025 Comparison)

Website scanners help you understand how safe, fast and well‑optimized a site really is. In 2025 there are several high‑quality tools that you can use for free.

How we compare the tools

• Speed of each scan,
• depth of analysis (performance, security, SEO),
• ease of use,
• limitations of the free tier.

1. Skyphaze – best all‑around free scanner

Skyphaze combines performance, security and SEO into one fast report. It checks Core Web Vitals, SSL/TLS configuration, security headers, basic malware signals and more, all inside a modern dashboard available in 16 languages.

2. Google PageSpeed Insights

Excellent for measuring performance and Core Web Vitals, but it does not scan for malware, security issues or reputation.

3. GTmetrix

Strong tool for front‑end optimization. It provides waterfall charts and detailed recommendations, but requires an account for advanced features.

4. Sucuri SiteCheck

Security‑focused scanner that looks for malware and blacklisting. It is a good second opinion if you suspect that a site was hacked.

5. Which scanner should you use?

For everyday use and quick checks, Skyphaze is the most balanced free option: it is fast, user‑friendly and covers multiple important areas at once. You can then combine it with specialized tools like PageSpeed Insights or Sucuri when you need more detail in a specific area.