Site Audit Engine

230-Factor Site Audit.
See Everything. Fix What Matters.

The most thorough SEO audit engine available. Every issue is severity-weighted, tier-classified, and linked to a concrete fix — so your team knows exactly what to do next.

Browse All 230 Checks
230
Total Checks
8
Categories
47
Auto-Fixable
<2min
Full Scan Time
8 Audit Dimensions

Every dimension of
modern SEO covered.

From core web vitals to AI-content detection — CloviSEO audits layers that most tools skip entirely.

Technical
Crawling, indexing, canonicals, redirects
42
checks
Performance / CWV
LCP, CLS, INP, TTFB, page weight
38
checks
On-Page
Titles, metas, headings, keywords
34
checks
Content
Thin content, duplicates, AI detection
28
checks
Security
SSL, HSTS, CSP, mixed content
24
checks
Images
Alt text, formats, compression, lazy load
22
checks
Mobile
Viewport, tap targets, interstitials
22
checks
Links
Broken links, anchors, internal linking
20
checks
Sample Audit Result

What a real audit looks like

Every audit returns a severity-weighted score, a tiered fix plan, and per-check descriptions with one-click fixes where available.

spectroscience.com
Full audit — 50 pages crawled — June 11, 2026
Audit complete
72 /100
SEO Score
Needs improvement
Critical Issues
3
Warnings
11
Passed
119
Pages crawled 50
Avg page speed 2.4s
Broken links found 7
Images missing alt 14
Auto-fixable issues 8
Top Critical Issues
Redirect chain detected
4 URLs have 3+ redirect hops — affects crawl budget and link equity
Manual fix
Missing canonical tags
12 pages have no canonical — creates duplicate content risk
Auto-fix available
LCP above 2.5s threshold
Homepage LCP measured at 3.8s — Core Web Vitals failing
Manual fix
One-click auto-fix for Tier-A issues

Critical Tier-A issues that are technically automatable — canonical tag injection, meta description generation, image alt text, robots.txt fixes — are resolved with a single click on Pro and Agency plans.

Full Check Reference

All 230 checks, grouped by category

Each check includes its impact level and whether it supports automatic remediation.

High impact Medium impact Low impact Auto-fix Manual
Canonical tag presence & validity
Self-referencing canonicals on all indexable pages; no canonicals pointing to non-canonical URLs
High Auto-fix
robots.txt validity & directives
File exists, parseable, no accidental Disallow: / blocking indexable content
High Manual
XML sitemap completeness
Sitemap present, submitted to GSC, all indexable URLs included, no 4xx/5xx entries
High Auto-fix
Redirect chain depth
No URL requires more than 1 redirect hop; 301 vs 302 correctness verified
High Manual
Broken internal links (4xx)
All internal anchor hrefs resolve to 200 status; no linking to deleted pages
High Manual
Crawl depth (clicks from homepage)
All important pages reachable within 3 clicks; deep orphan pages flagged
Medium Manual
hreflang implementation
Correct language/region tags, reciprocal links, x-default present for multi-language sites
Medium Manual
Structured data (Schema.org) validity
JSON-LD present for applicable types; validated against schema.org spec; no critical errors
Medium Auto-fix
JavaScript rendering & SSR
Critical content visible in raw HTML; not dependent on JS execution to surface to crawlers
High Manual
+ 33 more technical checks in full report
Largest Contentful Paint (LCP)
LCP should be under 2.5s; image/video/text element identified and optimization path suggested
High Manual
Cumulative Layout Shift (CLS)
CLS should be under 0.1; unstable elements identified with before/after coordinates
High Manual
Interaction to Next Paint (INP)
Replaces FID; INP should be under 200ms; long tasks blocking main thread flagged
High Manual
Time to First Byte (TTFB)
Server response time under 600ms; slow TTFB causes cascading CWV failures
High Manual
Next-gen image formats (WebP/AVIF)
Images served in WebP or AVIF format; fallback for legacy browsers checked
Medium Manual
Critical render path blocking
Render-blocking scripts and stylesheets in <head> deferred or inlined as needed
High Manual
Unused CSS / JS payload
Coverage analysis identifies unused code bytes; treeshaking and code-splitting opportunities
Medium Manual
Font loading strategy
font-display: swap applied; no invisible text flash; preconnect hints to font origins
Low Auto-fix
+ 30 more performance checks in full report
Meta title length & keyword presence
50–60 character range; target keyword in first 60 chars; no duplicate titles across pages
High Auto-fix
Meta description quality & length
150–160 characters; unique per page; includes call-to-action and primary keyword
Medium Auto-fix
H1/H2/H3 heading hierarchy
Single H1 per page; keyword in H1; logical nested structure without skipped levels
High Manual
Keyword density & prominence
1–2% density range; keyword appears in first 100 words; no keyword stuffing
Medium Manual
Internal linking depth & anchor diversity
3–5 contextual internal links per 1000 words; varied anchor text; no generic "click here" anchors
Medium Manual
Image alt text completeness
All <img> elements have descriptive alt attributes; decorative images use alt=""
Medium Auto-fix
+ 28 more on-page checks in full report
Thin content detection (<300 words)
Pages under 300 words flagged; combined or noindexed as appropriate; landing pages exempted
High Manual
Duplicate content clusters
Similarity scoring across pages; duplicate clusters identified with recommended canonical
High Auto-fix
AI-generated content detection
Via CloviHuman integration — pages with high AI probability flagged for humanization before publish
Medium Manual
+ 25 more content checks in full report
SSL certificate validity & expiry
Valid cert, not expiring within 30 days, full chain trusted, no SNI mismatch
High Manual
HSTS header presence
Strict-Transport-Security header with max-age 31536000; includeSubDomains recommended
High Auto-fix
Content Security Policy (CSP)
CSP header present; no unsafe-inline without nonce; XSS attack surface minimized
Medium Manual
Mixed content (HTTP on HTTPS pages)
No HTTP resources loaded on HTTPS pages; browser console mixed content errors flagged
High Auto-fix
Malware & blacklist scan (via CloviScan)
Domain checked against Google Safe Browsing and major security blacklists
High Manual
+ 19 more security checks in full report
Missing or empty alt attributes
All informational images must have descriptive alt text; decorative images use alt=""
Medium Auto-fix
Image file size over 200KB
Unoptimized images above threshold flagged; compression recommendations provided per image
Medium Manual
Lazy loading implementation
Below-fold images use loading="lazy"; LCP image must NOT be lazy-loaded
Medium Auto-fix
+ 19 more image checks in full report
Viewport meta tag
width=device-width, initial-scale=1 present; no user-scalable=no that blocks zoom
High Auto-fix
Touch target size (min 44x44px)
Clickable elements meet minimum size; adjacent targets have sufficient spacing
Medium Manual
Intrusive interstitial check
No full-screen popups on mobile that cover content before user interaction; Google penalty risk
High Manual
+ 19 more mobile checks in full report
Broken external links (4xx/5xx)
All outbound links verified; broken external links suggest poor editorial standards to crawlers
Medium Manual
Anchor text diversity ratio
Exact-match anchor text below 30% of total; branded, navigational, and generic anchors balanced
Medium Manual
Nofollow / sponsored attribute usage
Paid links correctly use rel="sponsored"; UGC links use rel="ugc"; affiliate links marked
Low Manual
+ 17 more link checks in full report
CloviSEO vs. Labrika — Audit Depth Comparison
Labrika covers 186 ranking factors. We go further — and add integrations they don't have.
Dimension CloviSEO Labrika
Technical SEO 42 35
Performance / CWV 38 29
On-Page SEO 34 42
Content Quality 28 22
Security 24 12
Images 22 18
Mobile 22 16
Links 20 12
Total 230 186
Plus CloviSEO adds AI-content detection (CloviHuman integration) and malware scanning (CloviScan integration) — capabilities Labrika does not offer.

Ready to see what's
holding your site back?

Run a free 50-page audit in under 2 minutes. No credit card required.

View Pricing
50 pages free every month
Results in under 2 minutes
Tiered fix plan included