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Site audit

How healthy is your website? do seu site?

A clear review of SEO, performance, structure, security, and AI presence, with practical recommendations to improve your website.

⚙️
Technical SEO
Structure and
crawlability checks
📈
AI Presence
Structure, authority,
and discoverability
🏛️
Performance
Speed and experience
on mobile devices

· Zero tracking · No account needed · Open-source stack

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Audit at a glance

Key facts about the tool — cost, speed, limits, and what the audit covers.

Price
$0
Free forever · no tiers
Checks
39
Individual checks per audit
Modules
15
All run in parallel
Speed
<30s
Results stream live
Account
None required
No API key · no signup
Usage limits
No quotas
Audit as many domains as you like
Licence
MIT open source
Tecnologia aberta
Privacy
Zero data stored
No cookies · no tracking · no ads

What the audit checks

39 individual checks across 15 modules — every one runs live against your real domain. No cached data, no estimates, no marketing fluff.

⚙️ Technical SEO

Response time, page weight, render-blocking scripts, DOM size, compression, AI bot policy in robots.txt, llms.txt presence, sitemap discovery.

📄 On-Page SEO

Heading structure (H1–H3), word count, internal vs external links, image alt coverage, modern formats (WebP, AVIF), FAQ section detection.

🗂️ Schema Markup

JSON-LD parsing, Organization, LocalBusiness, Product, FAQPage, BreadcrumbList, WebSite, Review and Offer coverage scoring.

📝 Content Quality

Flesch reading ease, average grade level, contact-signal detection, content depth, and language declaration.

♿ Accessibility

WCAG 2.1 AA checks: alt text, form labels, ARIA landmarks, skip-nav, heading hierarchy, link text, language attribute.

🛡️ Security Audit

Live Mozilla Observatory scan: CSP, HSTS, X-Frame, CORS, COOP, SRI, and grade A+ to F with deduction explanations.

📈 AI Presence

Evaluates structure, authority, and discoverability signals that help automated systems understand the website.

🏛️ Domain Authority

Wikipedia presence, Wikidata entity detection, sampled backlinks, domain age, and Open PageRank score for entity grounding.

📊 E-E-A-T Scorecard

Google quality evaluator signals: Experience, Expertise, Authoritativeness, Trustworthiness — derived from on-page and off-page signals.

🌐 DNS & Network

IPv4, IPv6, nameservers, MX records, TXT count, email security (SPF, DMARC, DKIM), CDN identification, server location.

🔗 Social & Meta

SERP snippet preview, Twitter and LinkedIn card rendering, Open Graph completeness, social profile detection, hreflang scan.

📈 Performance

Real Google CrUX field data: LCP, INP, CLS — Core Web Vitals from actual Chrome users, not synthetic Lighthouse runs.

Why AI visibility matters

Search is splitting in two. Half your prospective customers still type into Google and click a blue link. The other half ask ChatGPT, Perplexity, Claude, or Gemini and read a generated answer — and AI answers only mention you if your site sends the right signals.

Traditional SEO targets ranking. GEO — Generative Engine Optimization — targets being quoted. The two share some signals (schema, page authority, content quality), but GEO also depends on entity grounding (Wikipedia, Wikidata), structured Q&A, specific facts, and whether AI crawlers can actually access your content.

The audit brings these signals into one clear view, showing what works, what is missing, and which improvements offer the highest return for the effort.

What your audit report includes

  • → SEO score 0–100 — weighted across Technical SEO, On-Page SEO, Schema Markup, Content Quality, Accessibility (9 WCAG 2.1 AA checks), Security, Social & Meta, and real Core Web Vitals from Chrome UX data.
  • → AI Presence 0–100 — combines audited structure, authority, and discoverability signals into one clear indicator.
  • → Ranked action plan — every finding sorted by impact score so you fix what moves the needle first, not what's easiest.
  • → PDF export, embed badge & weekly monitoring — download a full report, embed a live score badge on your site, and subscribe to weekly email alerts when your score changes.

Frequently asked questions

Quick answers about the audit and its results.

Is the SemBronca audit free?
Yes, completely free with no hidden tiers. There's no signup, no API key, no credit card, and no usage limits. Enter any domain and you get a full 39-check audit in under 30 seconds. The tool runs on Cloudflare's free tier, which is why we can offer it without charge.
How does SemBronca evaluate AI presence?
We use Cloudflare Workers AI running Llama 3.1 to simulate three realistic AI search queries for your industry. The model evaluates whether your page contains the structured facts, authority signals, and content depth that help search engines and automated systems understand the business and its services, with per-query confidence levels and reasoning.
What is GEO (Generative Engine Optimization)?
GEO stands for Generative Engine Optimization — the practice of making your website more likely to be cited by AI assistants like ChatGPT, Perplexity, Claude, and Gemini when they answer user questions. Unlike traditional SEO which targets ranking in Google's results, GEO targets being quoted as a source in AI-generated answers. Key GEO signals include schema markup, authority entities (Wikipedia, Wikidata), specific facts, and structured Q&A content.
What does the SemBronca audit check?
39 individual checks across 15 modules: Technical SEO, On-Page SEO, Schema Markup, Content Quality, Accessibility (WCAG), Security Headers (Mozilla Observatory), International SEO, Social & Meta Tags, AI presence, off-page SEO, domain authority, site intelligence, DNS and network checks, SSL Certificate, and Redirect Chain. All checks run live against your real domain — no cached or stale data.
How long does an audit take?
Most audits complete in 15 to 30 seconds. All 15 modules run in parallel via Cloudflare Workers and stream results over Server-Sent Events as each module finishes, so you start seeing data within the first second instead of waiting for the full report.
Does SemBronca store my data?
We store only the public audit results for the domain you requested, keyed by domain name and cached for 3 days. There's no user account requirement, no IP-to-profile logging, and no third-party trackers. The full source code is on GitHub under the MIT licence so you can verify this yourself.