SEO Analyst — Free Website SEO Checker

Instantly score any website's SEO health across 6 key categories. Paste any URL to receive a detailed, actionable report — completely free, no sign-up required.

How it works

SEO Analyst fetches the target page server-side using a realistic browser fingerprint. When a site uses JavaScript-heavy rendering or bot protection, the tool automatically falls back to a headless Chromium instance that executes scripts and waits for the DOM to fully settle before capturing the HTML.

The captured HTML is then parsed and evaluated across six weighted categories, producing individual check results and a total score from 0 to 100. Each check explains exactly what was found and what to fix.

What we check

• Meta Tags — Title, description, viewport, Open Graph, and canonical URL.
• Headings — H1 presence, uniqueness, H2 usage, and heading hierarchy.
• Content Quality — Word count, text-to-HTML ratio, and paragraph structure.
• Images — Alt text coverage for accessibility and image indexing.
• Links — Internal linking depth, external references, and anchor text quality.
• Technical SEO — HTTPS, language attribute, JSON-LD, and indexing directives.

Why SEO matters

Search engine optimization makes your web pages more visible to search engines like Google, Bing, and DuckDuckGo. Studies consistently show that the first page of Google results captures over 90% of all click-through traffic. Unlike paid advertising, traffic earned through SEO compounds over time — a well-optimized page written today can continue driving visitors for years.

Technical SEO, content quality, and on-page structure work together. A page with excellent content but a missing title tag will underperform. A page with perfect meta tags but thin content will be outranked by competitors. SEO Analyst measures all dimensions together so you can see the full picture.

For a comprehensive introduction to SEO, see the Google SEO Starter Guide.

Grading scale

Scores are converted to a letter grade for an at-a-glance indication of overall health. A+ (90–100), A (80–89), B (70–79), C (60–69), D (50–59), F (below 50). Aim for an A or higher before launching any important page.

Frequently asked questions

Is this tool free to use?
Yes, completely free with no sign-up required. Just paste a URL and get your report instantly.

Does it work on password-protected pages?
No. SEO Analyst can only analyze publicly accessible pages — the same ones search engine crawlers can reach.

Does analyzing a site affect its ranking?
No. The tool fetches the page like any other visitor. It does not interact with search engines or send any signals to Google.

How often should I run an audit?
After any significant content change, after a redesign, and at least once a month for important pages. SEO fundamentals can break silently during deployments.

Contact

Questions or feedback? Reach us at info@seoanalyst.es.