Building a more secure, fast, and transparent web.
Website Auditor was created to give developers, site owners, and security teams deep, enterprise-grade diagnostics without paywalls, gated data, or complex setups. We analyze every layer of a website — from TLS handshakes to SERP snippets.
Unified visibility across the modern web stack.
Web architectures have become increasingly sophisticated. A single production service relies on edge CDNs, SSL termination, CSP nonces, DNSSEC records, structured JSON-LD schemas, and email authentication chains.
Instead of forcing engineers to juggle ten separate tools, Website Auditor consolidates every test into one unified intelligence engine. You get immediate, actionable feedback with verified remediation snippets for Nginx, Apache, Cloudflare, and Express.
100% Free & Open Access — No paywalls, trial periods, or credit card requirements.
Edge-Speed Parallel Execution — Asynchronous probes finish in under 15 seconds.
AI-Ready Fix Prompts — Copy-paste prompts tuned to your exact server and stack.
Who Relies On Website Auditor?
Full-Stack Developers & DevOps
Verify deployment security headers, certificate renewals, DNS propagation, and server response benchmarks.
SEO Specialists & Digital Agencies
Audit heading trees, canonical integrity, SERP snippet rendering, image alt coverage, and indexability signals.
Security Teams & Compliance Officers
Assess external attack surfaces, email spoofing vulnerabilities, TLS deprecations, and cookie flags.
The 6 Pillars of the Website Auditor Score™
Our mathematical model assigns strict, calibrated weights to every pillar, ensuring the overall grade accurately reflects your real-world security and optimization posture.
Security & Encryption
Validates SSL/TLS cipher suites, HSTS preloading, Content Security Policy (CSP), X-Frame-Options, secure cookie flags, and cross-site scripting mitigations.
- TLS 1.3 & Cert Chain
- Strict CSP & HSTS
- Cookie SameSite/Secure
- Known Malware & Defacement
SEO & Content Health
Inspects metadata optimization, canonical routing, robots.txt directives, XML sitemaps, Open Graph social cards, SERP snippet rendering, and heading hierarchy.
- Visual Headings Outline
- SERP Snippet Preview
- Canonical Tag Verification
- Structured Schema JSON-LD
Infrastructure & Cloud
Discovers authoritative DNS resolvers, DNSSEC cryptographic validation, CDN edge routing, WAF protections, HTTP/2 & HTTP/3 multiplexing, and server headers.
- DNSSEC Validation
- CDN & WAF Discovery
- HTTP/3 Protocol Support
- Gzip / Brotli Compression
Speed & Core Web Vitals
Benchmarks real page response latencies, server Time To First Byte (TTFB), total transfer payload size, asset distribution, and environmental carbon efficiency.
- Real Server TTFB
- Asset Weight Breakdown
- Lighthouse Diagnostic Signals
- Carbon & Energy Rating
Trust & Transparency
Evaluates domain registration age, WHOIS registrar reputation, privacy policy & terms disclosure, third-party analytics trackers, and security.txt contact availability.
- WHOIS Domain Longevity
- Security.txt RFC Compliance
- Third-Party Tracker Scan
- Privacy Policy Discovery
Email Auth & Anti-Spoofing
Audits outgoing mail authentication protocols protecting your domain name against phishing, spoofing, and fraud via SPF, DKIM alignment, and DMARC enforcement.
- SPF Mechanism Validation
- DMARC Enforcement Policy
- MTA-STS TLS Mail Transport
- TLS-RPT Failure Reporting
How Grade Bands Are Determined
Composite scores range from 0 to 100 based on weighted probe outcomes. A site cannot earn an A or A+ grade if any critical security vulnerability (such as an expired certificate or severe mixed-content leak) is identified.
Frequently Asked Questions
- Most online tools only scan one narrow aspect — either just SSL certificates, just HTTP security headers, or just PageSpeed. Website Auditor combines 25+ deep probes across six mission-critical pillars (Security, SEO, Speed, Infrastructure, Trust, and Email) into a unified, actionable report with copy-paste remediation code and AI fix prompts.
- Every probe executes independently and produces an evidence-backed score weighted by threat severity (Critical, High, Medium, Low, Informational). Probes roll up mathematically into the 6 category pillars with calibrated weights (Security 25%, SEO 20%, Infrastructure 15%, Performance 15%, Trust 15%, Email 10%) to yield a transparent 0–100 composite score and letter grade (A+, A, B, C, D, F).
- Yes. Both our comprehensive web-based auditor, our 17 standalone security & SEO tools, and our public REST API endpoints are 100% free with no credit card, paywall, or forced account registration required.
- No. Website Auditor only acts as a public HTTP client inspecting publicly available HTTP headers, DNS records, SSL certificates, and HTML metadata. We never store credentials, sessions, cookies, or non-public intranet contents.
- Yes. Every scanned domain is instantly available as structured JSON at /api/public/audit/<domain> or as an embeddable SVG live badge at /badge/<domain>.svg for GitHub READMEs, status dashboards, and client portals.