The methodology behind every check — why it's legal, transparent, and reliable
Skanno is an automated website audit tool. It analyzes the HTML, CSS, and JavaScript code of any public website to identify issues with performance, security, accessibility, SEO, and regulatory compliance.
Websites are public resources by definition. When you load a site in your browser, you access its public data exactly the same way Skanno does. We never distribute private data (forms, passwords, personal information), we only analyze source code that anyone can read. It's like inspecting a building from a public sidewalk: legal and transparent.
Skanno performs two complementary scans:
No personal data is collected or transmitted. Browser scanning is 100% local (on your device). The report is only saved to our database if you choose to share it.
We measure how fast your site is. We check: total page weight, number of resources, Core Web Vitals metrics (LCP, CLS, INP), compression, HTTP cache, lazy-loading of images.
Why: A slow site makes visitors leave (every 100ms delay = -1% conversions per Google). It's also a Google ranking factor.
Legal? Yes. We're measuring something public: response times that anyone can measure. We don't access private data.
We verify if your site is optimized for search engines: titles, descriptions, headings, open graph tags, canonical, hreflang, structured data (JSON-LD), content length, keywords.
Why: If Google can't understand your site, it won't rank it. These tests reflect the official guidelines published by Google and Bing.
Legal? Completely. We're verifying if you're following guidelines that the search engines themselves publish.
We check if your site is protected from attacks: HTTPS, certificate validity, security headers (CSP, HSTS, X-Frame-Options), mixed content, cookie security, GDPR compliance (cookie banner, privacy policy, consent management), malware protection (Google Safe Browsing).
Why: A compromised site exposes visitors and the owner to huge legal risks. GDPR requires sites to protect personal data.
Legal? Absolutely. We don't access private data. We only check protection mechanisms that are publicly visible (headers, certificates, etc.).
We verify your site is usable by everyone: color contrast (WCAG 2.2), alt text for images, keyboard accessible focus, labels on forms, logical heading structure, minimum button size (24×24px), reduced-motion support.
Why: 15-20% of the population has disabilities. Accessibility is a right and a legal requirement (WCAG, ADA in USA, AODA in Canada).
Legal? Yes. Many sites have lost lawsuits for not being accessible. We check criteria established by international standards.
We measure professionalism indicators: contact page present, clickable phone number, about page, connected social media, updated copyright, no broken images, forms with feedback, breadcrumb, working buttons, dark patterns in cookie banner.
Why: Visitors decide whether to trust a site in ~0.05 seconds. "Broken" sites (dead links, missing images, no contact) are signs of abandonment and increase bounce rate.
Legal? Completely. We're only measuring publicly visible elements.
We verify compliance with regulations: GDPR (cookies, privacy policy, granular consent), CCPA ("Do Not Sell" link for US users), Terms & Conditions, Impressum (German/Italian law), spoof/phishing detected by Google Safe Browsing, EU AI Act (AI usage transparency).
Why: Non-compliance = legal risks. GDPR has fines up to €20M. CCPA up to $7.5k per violation.
Legal? Yes. We're checking if your site complies with laws that ALL companies must follow.
We make an HTTP request to your site like any browser would. We read HTML code and analyze: meta tags, HTTP headers, redirects, SSL certificates, robots.txt, sitemap.xml. We don't send cookies, don't interact with forms, don't execute JavaScript.
If you install the Skanno Chrome Extension, the scan happens on YOUR device. The extension runs your site in your browser, collects info on effective CSS, loaded images, executed JavaScript, visual interactions. Data stays local: it's never transmitted unless you choose to share the report.
Security: It's the safest method possible because nothing leaves your computer unless you choose it.
Your reports are private by default. If you share them publicly (via link), the report is visible to anyone with the link (like a public Google Sheets document).
We don't sell data. We don't profile sites. We don't use your data for purposes other than auditing.
You can see exactly what we're checking: all 315 tests are listed. There are no "secret" metrics.
Yes. Websites are public resources. Anyone can access and analyze them. It's like inspecting a public building. The only exception: if you use a robots.txt file to block bots, Skanno respects it (it's a community best practice).
No. We don't sell data. We only use aggregated data to improve our tests (e.g., "what's the average response time for e-commerce sites?"). No personal or identifying data is ever included.
Nothing on our side: we don't collect personal data. If your site uses tracking cookies, the browser scan will see that cookies are set, but that's the same "public behavior" a regular visitor would see. We don't capture data inside cookies (which could be private).
Yes, by adding to your robots.txt: "User-agent: Skanno-bot / Disallow: /". We respect robots.txt. You can also contact us to be removed from future scans.
Skanno includes 315 tests (vs 30-40 in Lighthouse) and covers law (GDPR, CCPA), advanced security, dark patterns, compliance. It's complementary to Lighthouse, not a replacement.