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  3. /Website Health & SEO Audit

Free Website Health & SEO Checker

Scan any publicly accessible website for technical SEO problems, HTTP errors, missing metadata, heading hierarchy mistakes, broken link patterns, robots directives, and structured data in seconds.

Quick test examples:

Security & Privacy Notice: Audits are executed strictly server-side against public web servers. For your security and infrastructure safety, private IP ranges (e.g., 127.0.0.1, 10.0.0.0/8, 192.168.0.0/16) and cloud metadata services are blocked.

Engineering & Growth Fundamentals

Why Technical Website Health Is the Foundation of Organic SEO

Content and backlinks cannot rank if search engine bots struggle to crawl, interpret, or index your web pages. Technical SEO eliminates structural blockers before they cause traffic drops.

01

Crawl Budget Efficiency

Search engines allocate finite crawler resources to every site. Redirect loops, 404 errors, and missing robots directives waste crawl budget on broken paths rather than high-value content pages.

02

Accurate SERP Snippets

Optimized title tags and meta descriptions directly dictate click-through rates (CTR) on Google search result pages. Truncated titles or missing Open Graph tags reduce user engagement and social sharing fidelity.

03

Semantic Accessibility

Screen readers and search bots rely on proper heading hierarchy (H1 through H6) and descriptive image alt attributes to comprehend content organization. Accessibility compliance directly aligns with algorithmic clarity.

Transparent Scoring Model

How the 100-Point Technical Health Score Is Calculated

Silixen’s Website Health & SEO Checker uses an objective, weighted point system across 8 core technical categories. Every check is derived directly from live HTTP responses and parsed HTML data — no fabricated metrics or arbitrary penalties.

Grade Classification Scale

A+ / A90 – 100 ptsOptimal Health
B80 – 89 ptsMinor Warnings
C70 – 79 ptsModerate Issues
D50 – 69 ptsSubstantial Fixes
F0 – 49 ptsCritical Failures
20 Points

HTTP, HTTPS & Accessibility

Measures server reachability, HTTP response codes (200 OK vs 4xx/5xx errors), TLS/SSL encryption, and HTTP-to-HTTPS redirect enforcement.

Evaluated Factors:
  • ✓200 OK final HTTP status
  • ✓HTTPS protocol verification
  • ✓Automatic HTTP-to-HTTPS redirect
  • ✓Redirect hop budget (< 4 hops)
20 Points

Metadata & Canonicalization

Analyzes page title tags, meta descriptions, canonical URLs, indexing meta robots tags, and Open Graph tags essential for search indexing and social snippet rendering.

Evaluated Factors:
  • ✓Unique title present (30-65 chars)
  • ✓Meta description present (70-160 chars)
  • ✓Self-referential or valid canonical URL
  • ✓Robots directives allow indexing
  • ✓Open Graph title, description & image tags
15 Points

Content Structure & Headings

Inspects semantic HTML markup, single H1 count, heading level sequence, empty heading tags, HTML language declaration, and visible textual content volume.

Evaluated Factors:
  • ✓Exactly one H1 element
  • ✓Valid heading hierarchy (no skipped levels)
  • ✓HTML lang attribute defined
  • ✓Substantial visible body copy (> 150 words)
10 Points

Images & Media

Evaluates image accessibility, alt attribute compliance, empty alt values, and modern loading hints (loading='lazy') without executing high-egress external downloads.

Evaluated Factors:
  • ✓Alt attribute present on all images
  • ✓Meaningful descriptive alt text
  • ✓Native lazy-loading hints applied
10 Points

Links & Mixed Content

Audits internal navigation links, external references, descriptive anchor text (avoiding 'click here'), and flags insecure HTTP mixed-content links on HTTPS domains.

Evaluated Factors:
  • ✓Descriptive anchor text on all links
  • ✓Healthy internal navigation distribution
  • ✓No insecure HTTP links on HTTPS pages
10 Points

Robots.txt & XML Sitemap

Validates the availability of /robots.txt directives, checks for sitemap declarations, and tests standard XML sitemap endpoints within safe network budgets.

Evaluated Factors:
  • ✓Publicly accessible robots.txt
  • ✓Sitemap directive in robots.txt
  • ✓XML sitemap responds with 200 OK
10 Points

Structured Data (Schema)

Detects embedded JSON-LD markup blocks, verifies JSON syntax validity, and extracts high-value schema types like Organization, WebSite, Article, and Product.

Evaluated Factors:
  • ✓Embedded JSON-LD blocks detected
  • ✓Valid JSON syntax without parse errors
  • ✓Recognized Schema.org @type declaration
5 Points

Performance Signals

Measures server Time To First Byte (TTFB), lightweight HTML document payload size, and browser resource hints like dns-prefetch or preconnect.

Evaluated Factors:
  • ✓Fast server response TTFB (< 800ms)
  • ✓Lightweight HTML payload (< 150 KB)
  • ✓Modern resource hint directives

Important Scope Notice: This audit measures technical crawlability and on-page structural health. It does not measure synthetic browser Core Web Vitals (such as LCP, CLS, or INP), keyword search intent, or external domain backlink authority. Scores should be used as an engineering quality baseline rather than a Google ranking guarantee.

Frequently Asked Questions

Website Health & Technical SEO FAQs

Common questions about how website health audits work, scoring methodologies, and how to resolve technical SEO issues.

A Technical Website Health Score is an objective composite rating (from 0 to 100) that evaluates how well your web page complies with search engine crawlability standards and modern web development best practices. It audits HTTP protocol security, metadata optimization, heading hierarchy, image accessibility, link structures, robots.txt directives, XML sitemaps, JSON-LD structured data, and server response latency.
Complementary Web Utilities

Explore More Free Engineering Tools on Silixen

Pair your technical SEO audit with real-time server reachability tests and live DNS inspection tools to maintain peak infrastructure reliability.

Domain & DNS Lookup →Website Uptime & Status Checker →Read Technical Blog & Guides →
Silixen Logo
Silixen

Free online tools for everyone. Simple, fast, and always accessible directly from your browser.

Categories

  • Image Tools
  • PDF Tools
  • Calculators
  • SEO & Marketing
  • Developer Tools
  • Text & AI Writing
  • Design Tools
  • Social Media Tools

Useful Links

  • Home
  • All Tools
  • About
  • AI Studio
  • Contact
  • Privacy Policy
  • Terms of Service

Stay Updated

Get notified about new tools and updates. Zero spam, ever.

© 2026 Silixen. All rights reserved.

Built withfor a better web.