marksandspencer.com 64 C
🛡️ SEO 58 🤖 GEO 70 ⚡ Perf 39 🏗️ Arch 93

marksandspencer.com — Global SEODiff Score 64/100

marksandspencer.com
📊

marksandspencer.com shows strong AI visibility with an ACRI of 81/100, outperforming 95% of indexed domains. In the infrastructure sector, marksandspencer.com outperforms the average (57), suggesting strong competitive positioning in AI search. Content is delivered server-side, meaning bots and AI agents can parse the full page without executing JavaScript. The bloated 39.1× token ratio highlights an urgent need to clean up non-content markup, scripts, and navigation clutter. Minimal structured data (1 block) limits the site's ability to communicate entity relationships to AI systems. The site maintains an open-door policy for AI crawlers — GPTBot, ClaudeBot, and other major agents are all allowed.

64
C — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Performance (39) is your bottleneck.
🎯 Top Fix: Reduce token bloat (39×) → +5–10 pts
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 30 snapshots
Feb 23 Mar 21
🔔 Recent AI Indexing Activity
🔄 Mar 21 Content change detected
🔄 Mar 20 Content change detected
🔄 Mar 19 Content change detected
🔄 Mar 17 Content change detected
🔄 Mar 17 Content change detected
Does your site score higher than marksandspencer.com?
Run the same 40-signal audit on your own domain — free, instant results.
Scan Your Site Free →
🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)58 × 0.25 = 14.5
🤖 AI Readiness / GEO (40% weight)70 × 0.40 = 28.0
⚡ Performance (20% weight)39 × 0.20 = 7.8
🏗️ Architecture & Trust (15% weight)93 × 0.15 = 13.9
Weighted sum = 14.5 + 28.0 + 7.8 + 13.9
Global SEODiff Score = 64 (C)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
94
Structure
avg 35
2
Schema
avg 9
70
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 0.2%
Rank #1797
Aligned
Gap
AI (ACRI)
Top 5%
Score 81/100

marksandspencer.com has balanced Google and AI visibility — both rank roughly in the same tier. ACRI measures technical crawler readiness. Read the methodology →

Why marksandspencer.com ranks here

Tech stackNext.js
RenderingSSR
Schema coverage1 blocks
Token bloat39.1×

Fastest improvements

  • Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
  • Create an llms.txt file so AI crawlers can discover your content structure without heavy crawling. Generate llms.txt →
  • Run a full entropy audit to find which DOM regions waste the most tokens. Run Entropy Audit →
🧪

JavaScript Rendering Check

We check what AI crawlers miss when they skip JavaScript execution.

Running headless browser to simulate AI extraction…
🛡️

Traditional SEO

58/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

59 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

158 chars
Good length

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 19
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://www.marksandspencer.com/
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en-gb
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — M&S | Marks & Spencer | Fashion, Home, Beauty, Food & Gifts
  • ✓ og:description — Shop on-trend womenswear, quality menswear, home and beauty essentials and mouth-watering food and drink. Order online with free delivery or collection at M&S
  • ✓ og:image — preview
  • ✗ twitter:card
📐 How the SEO Pillar score is calculated

SEO Pillar = Title (20 pts) + Meta Desc (20 pts) + Heading Hierarchy (20 pts) + Indexability (20 pts) + Social/OG (20 pts)

Each sub-score is derived from the checks above. Canonical tag, lang attribute, og:image, and a single H1 are the highest-impact items.

🤖

AI Readiness / GEO

70/100 40 % of Global Score 🟢 High Confidence

This pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.

🔗

Citation Alternatives

Research
💡
Insight: In the infrastructure sector, safely.co.jp (ACRI: 90) currently has stronger AI extractability. AI models tend to prefer sources with higher semantic structure and schema coverage. Domains with ACRI < 40 see 3.5× more hallucinations. Read the research →
marksandspencer.com
68
Your ACRI Score
90
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. safely.co.jp has schema coverage of 3 blocks and uses WordPress. Improve your score by implementing the remediation patches below.
📊 Side-by-Side Comparison →
🚨

Hallucination Risk

Research

Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.

Analyzing hallucination risk…

🤖 Bot Access Matrix

GPTBot (OpenAI)
Allowed
ClaudeBot (Anthropic)
Allowed
CCBot (Common Crawl)
Allowed
Google-Extended
Allowed
Googlebot
Allowed

👻 Rendering (Ghost Ratio) Docs

Ghost Ratio 5%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 94/100 — Excellent
Structured Elements 476 elements (476 lists, 0 rows, 0 headers)
Total Words1795
Raw Density26.5%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks1 block(s) — Basic (low value for AI)

Schema Coverage Map

1/7 schema types detected
❌ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
❌ Article
✅ WebSite
💡Organization schema missing. AI models cannot identify your brand entity. Without it, your brand won't appear in Knowledge Panels or be associated with your content.
💡Product / Service schema missing. AI models don't know this is a SaaS product. Add Product or SoftwareApplication schema so AI understands what you offer and can surface pricing/features.
💡BreadcrumbList schema missing. AI cannot understand your site hierarchy or how pages relate to each other.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.

📐 AI Efficiency Metrics Docs

56
AI Extractability
High
Crawl Cost
None
Blocklist Risk
Extractability56/100 — AI models can partially extract answers from this page
Crawl CostHigh (80/100) — expensive for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

2%
🗑️ 98%
Useful Content (11.7 KB)Bloat (445.0 KB)
Token Bloat Ratio39.1× — Bloated

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage31 / 31 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set
💡Your HTML is 456.7 KB, but only 11.7 KB is text. 2% useful / 98% bloat. AI crawlers have limited context windows (e.g. 128k tokens). This level of bloat (39.1×) risks context-window truncation by ChatGPT, Claude, and Gemini. Reduce inline scripts, CSS, hydration payloads, and tracking code.

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 97.4% · SNR: 0.03 · Signal: 2991 / Noise: 113927 tokens

🔬 AI-Crawler Simulation

See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.

🌐
This is what humans see — styled, branded, visual.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
🤖

AI Answer Preview

NEW

See how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.

Simulating AI extraction…
🧠

The LLM Interpretation

AI-VERIFIED

SEODiff AI analyzed the extracted content of marksandspencer.com and produced this structured business intelligence. Fields marked SEMANTIC VOID indicate information the AI could not find — a critical gap in your site’s machine-readability.

Core Offering
M&S offers a personalized online bra fitting service delivered by trained consultants, leveraging a digital platform and human expertise to
Target Audience
Parents of children under two years old, expecting parents, Sparks members, and individuals seeking personalized advice on clothing and home products.
Pricing Model
Subscription-based (Sparks membership), with discounts and promotions on selected products and services. Offers include percentage discounts (30-50%) on specific brands and collections.
🔗 Integration Partners
SparksAutographProstate Cancer Trading Limited
🛡️ Compliance Standards
GDPRSOC 2
🏆 Competitive Moat
Combination of AI-powered bra fitting technology and personalized advice from trained consultants, creating a unique and valuable customer experience.
📊 Content Depth
6/10
🔄 Programmatic SEO Signals
Template comparison pages (e.g., 3 for 2, 2 for £70)Integration directory pages (Sparks)Category pages (Lingerie, Men, KidsWear, Home, Brands)
⚡ Key Pain Points
• Complex terms and conditions
• Reliance on external services (internet provider)
• Data security concerns (virus/malware protection)
• Limited SEO optimization of individual product pages
Analyzed by SEODiff AI · 2026-02-28

🔧 Tech Stack

FrameworkNext.js
AI-Readiness Score70/100
Server
CDN
HTTP Status200
Load Time1141 ms
Raw HTML Size456.7 KB
Visible Text Size11.7 KB

Performance & Speed

39/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

1141 ms
Slow — bots may time out or deprioritise

Google considers <200 ms "good". AI crawlers may have even shorter timeouts.

📦 Page Weight

2750
DOM nodes
457 KB
HTML payload
Heavy page — consider reducing DOM complexity

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=300
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

1
tracker scripts
1
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
optimizely.com
📐 How the Performance Pillar score is calculated

Perf Pillar = TTFB (35 pts) + Page Weight (25 pts) + Cache/CDN (20 pts) + Tracker Tax (20 pts)

TTFB <200 ms = full marks. DOM >3000 or payload >300 KB incurs heavy penalties. Tracker scripts beyond 5 reduce score.

🏗️

Architecture & Trust

93/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://www.marksandspencer.com/sitemap/sitemap_index.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

703
internal links
15
external links
Good internal linking — helps crawlers discover content

🔒 Security & Trust

  • ✓ HSTS header (Strict-Transport-Security)
  • ✗ Content-Security-Policy header
  • ✓ HTTP status 200 OK (got 200)

♿ Accessibility Signals

  • ✓ HTML lang attribute → en-gb
  • ✓ Meta viewport for mobile
  • ✓ Single H1 for screen readers
📐 How the Architecture Pillar score is calculated

Arch Pillar = Sitemap & Robots (30 pts) + Linking (25 pts) + Security (25 pts) + Accessibility (20 pts)

Having a valid sitemap, allowing AI bots, HSTS, and a good internal link count are the highest-impact items.

🏅 AI-Verified Trust Badge

Your site scores 68/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for marksandspencer.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/marksandspencer.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=marksandspencer.com" alt="AI-Verified by SEODiff" width="280" height="52"></a>

💡 Paste in your site footer, GitHub README, or email signature. Badge updates automatically as your score changes.

� Deep Crawl Analysis 327 pages · Deep-10

Homepage ACRI
68
Single-page score
-17
Moderate hidden bloat
Δ delta
Site-Wide ACRI
51
Avg across 327 pages · Range 0–82
🔍
Hidden Bloat Detected

Homepage scores 68, but internal pages average only 51 — a -17-point gap. Blogs, docs, and legacy content are dragging down AI readability site-wide.

Topical Cohesion
18%
Topical Drift
TF-IDF cosine similarity
Total Words
291369
Avg Bloat
267.9×
Page Type ACRI Token Bloat Words Status
https://marksandspencer.com/terms
Terms & Conditions | Offers | M&S
pricing 82 2.0× 70119 💰 Pricing
https://marksandspencer.com/privacy legal 76 7.6× 12391
https://www.marksandspencer.com/l/men/just-arrived/shoes
New In Men's Shoes | Just Arrived at M&S
pricing 61 236.5× 625 💰 Pricing
https://www.marksandspencer.com/optime-essentials-shine-7-8-leggings/p/clp23019392
Optime Essentials Shine 7/8 Leggings | Adidas | M&S
pricing 61 81.2× 1392 💰 Pricing
https://www.marksandspencer.com/l/men/mens-suits/mens-3-piece-suits
Men’s 3-Piece Suits at M&S
pricing 61 166.4× 838 💰 Pricing
https://www.marksandspencer.com/straight-fit-jeans/p/clp23053089
Straight Fit Jeans | Rodd & Gunn | M&S
pricing 61 81.4× 1433 💰 Pricing
https://www.marksandspencer.com/l/men/mens-trends/mens-trending-on-social
Men's Trending On Social at M&S
pricing 61 252.8× 842 💰 Pricing
https://www.marksandspencer.com/welcome-to-the-world-sit-and-play-under-the-sea-interactive-seat/p/hbp22588055
Welcome to the World Sit & Play Under the Sea Interactive Seat | Mamas & Papas | M&S
pricing 61 119.3× 816 💰 Pricing
https://www.marksandspencer.com/l/men/mens-trousers
Men's Trousers at M&S
pricing 61 201.7× 1139 💰 Pricing
https://www.marksandspencer.com/healthy-growth-calming-duvet/p/hbp22607193
Healthy Growth Calming Duvet | Silentnight | M&S
pricing 61 69.3× 1676 💰 Pricing
https://www.marksandspencer.com/marathon-20-running-shorts/p/clp23003302
Marathon 20 Running Shorts | Adidas | M&S
pricing 61 80.5× 1437 💰 Pricing
https://www.marksandspencer.com/own-the-run-running-shorts/p/clp23003300
Own The Run Running Shorts | Adidas | M&S
pricing 61 78.9× 1491 💰 Pricing
https://www.marksandspencer.com/own-the-run-cuffed-slim-fit-joggers/p/clp23003305
Own The Run Cuffed Slim Fit Joggers | Adidas | M&S
pricing 61 105.8× 1044 💰 Pricing
https://www.marksandspencer.com/optime-essentials-stash-pocket-leggings/p/clp23021170
Optime Essentials Stash Pocket Leggings | Adidas | M&S
pricing 61 80.7× 1463 💰 Pricing
https://www.marksandspencer.com/optime-3-stripes-high-waisted-leggings/p/clp23003308
Optime 3-Stripes High Waisted Leggings | Adidas | M&S
pricing 61 76.4× 1543 💰 Pricing
https://www.marksandspencer.com/train-essentials-high-waisted-gym-shorts/p/clp23003314
Train Essentials High Waisted Gym Shorts | Adidas | M&S
pricing 61 85.7× 1366 💰 Pricing
https://www.marksandspencer.com/own-the-run-funnel-neck-half-zip-sweatshirt/p/clp23003325
Own The Run Funnel Neck Half Zip Sweat-shirt | Adidas | M&S
pricing 61 83.7× 1435 💰 Pricing
https://www.marksandspencer.com/own-the-run-crew-neck-running-top/p/clp23003359
Own The Run Crew Neck Running Top | Adidas | M&S
pricing 61 77.1× 1530 💰 Pricing
https://www.marksandspencer.com/essentials-big-logo-crew-neck-vest-top/p/clp23003368
Essentials Big Logo Crew Neck Vest Top | Adidas | M&S
pricing 61 78.6× 1512 💰 Pricing
https://www.marksandspencer.com/future-icons-winners-3-0-crew-neck-vest-top/p/clp23003376
Future Icons Winners 3.0 Crew Neck Vest Top | Adidas | M&S
pricing 61 84.5× 1378 💰 Pricing
Showing 20 of 100 pages. Unlock full subpage table →
📂
Health by Sub-Directory
Average ACRI and top issues aggregated by URL path prefix
Path Pages Avg ACRI Ghost % Bloat Top Issue
/l/ 140 57 1% 259.6× Bot Blocked
/c/ 2 38 1% 733.4× Bot Blocked
/farmlands-leather-casual-belt/ 2 58 1% 179.8× Bot Blocked
/maternity-knitted-v-neck-midi-jumper-dress/ 2 48 1% 288.3× Bot Blocked
/pure-cotton-floral-outdoor-cushion/ 2 38 1% 437.3× Bot Blocked
/wool-blend-textured-utility-jacket/ 1 48 1% 386.7× Bot Blocked
/adizero-essentials-waterproof-running-jacket/ 1 58 1% 179.9× Bot Blocked
/all-gym-seasonal-rib-tonal-3-stripes-vest-top/ 1 58 1% 115.2× Bot Blocked
/parterre-pure-cotton-floral-eyelet-curtains/ 1 48 1% 415.6× Bot Blocked
/corduroy-collared-jacket/ 1 48 1% 226.6× Bot Blocked
/river-outdoor-cushion/ 1 38 1% 484.6× Bot Blocked
/landscape-throw/ 1 38 1% 468.5× Bot Blocked
/privacy/ 1 76 0% 7.6× High JS Bloat
/welcome-to-the-world-sit-and-play-under-the-sea-interactive-seat/ 1 61 1% 119.3× Bot Blocked
/2pk-pure-cotton-snowy-owls-oxford-pillowcases/ 1 51 1% 285.0× Bot Blocked
🔄 Re-Crawl & Update 📡 Track this Domain

Scores update automatically each month. Create a free account for on-demand re-crawls (3/month free).

🔌 API Access

Pull this data programmatically. All sub-page metrics are available via our public API.

curl https://seodiff.io/api/v1/deep10/domain/marksandspencer.com

Get your free API key — 100 requests/month included.

🔗 Similar infrastructure Sites

Domains with a similar tech stack, industry, and AI readiness profile to marksandspencer.com. Compare side-by-side.

Domain ACRI AI Score Tech Stack Token Bloat Schema
marksandspencer.com (this site) 68 81 Next.js 39.1× 1
driphydration.com 86 95 WordPress 1.9× 2 Compare →
profitserver.net 86 90 WordPress 3.8× 2 Compare →
symbolonly.com 86 89 Cloudflare Pages 2.4× 3 Compare →
insuranceyet.com 86 87 Custom / Proprietary 4.9× 4 Compare →
kondela.hu 86 93 Custom / Proprietary 3.1× 4 Compare →
Compare All 5 Similar Sites →

📊 Semantic Share of Voice

How often would an AI cite marksandspencer.com when users ask about topics in this domain's niche? We run entity queries through our 188k-page search index and measure citation probability.

Analyzing citation landscape…

🎭

Bait & Switch Delta

F 5 PAGES

Compares your homepage rendering quality with inner pages. A high drift score means AI crawlers see a polished homepage but degraded inner content — the "bait & switch" that erodes trust.

26
Homepage ACRI
56
Inner Avg ACRI
-30
ACRI Delta
40%
Homepage Ghost
22%
Inner Avg Ghost
65
Drift Score [?]
Worst Inner Pages
38 80% pricing https://marksandspencer.com/help
76 10% legal https://marksandspencer.com/privacy
29 0% support https://marksandspencer.com/contact
🛡️

E-E-A-T Trust Signals

C 45/100

Trust indicators extracted from surface pages. These signals help AI systems verify your site's Experience, Expertise, Authoritativeness, and Trustworthiness.

Physical Address
Phone Number
Email Contact
About Page
Contact Page
Privacy Policy
Terms of Service
Named Leadership
🔗

Citation Profile

19 DOMAINS

Outbound citation patterns across surface-crawled pages. Sites that cite diverse, authoritative sources signal higher E-E-A-T to AI systems.

25
Total Links
19
Unique Domains
5.0
Avg/Page
76%
Diversity
instagram.com ocado.com accessable.co.uk careers.marksandspencer.com corporate.marksandspencer.com mandsopticians.com url.uk.m.mimecastprotect.com mandstravelmoney.com gov.uk twitter.com
🏘️ Outbound Neighborhood Trust Avg Trust: 22.6

AI trust scores for the domains marksandspencer.com links to. Citing high-trust sources lifts your own credibility signal.

🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to marksandspencer.com. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

Add Organization JSON-LD
High Impact ⏱ 5 min
AI models cannot identify your brand entity without Organization schema. This is the #1 fix for AI visibility.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Marksandspencer",
  "url": "https://marksandspencer.com",
  "logo": "https://static.marksandspencer.com/images/favicon.ico",
  "sameAs": []
}
</script>
Reduce Token Bloat
Medium Impact ⏱ 1–2 hrs
Only 2% of your HTML is useful content. AI crawlers waste context window tokens on bloat.
html
<!-- Move inline CSS to external stylesheets -->
<link rel="stylesheet" href="/css/main.css">

<!-- Move inline scripts to external files with defer -->
<script src="/js/app.js" defer></script>

<!-- Remove duplicate navigation blocks -->
<!-- Keep only ONE <nav> in the <header> -->

<!-- Ensure <main> wraps your primary content -->
<main>
  <!-- Your content here — this is what AI sees first -->
</main>
Add FAQ Schema
Medium Impact ⏱ 10 min
FAQ schema lets AI models directly extract Q&A pairs. This is the easiest way to get featured in AI responses.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is Marksandspencer?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Marksandspencer does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Marksandspencer work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Marksandspencer."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for marksandspencer.com:

Current Score
81
Projected Score
95
Improvement
+14 pts
Add Organization schema +6 pts
Reduce token bloat +5 pts
Add FAQ schema +3 pts

*Estimates based on SEODiff's scoring model. Actual results depend on implementation quality.

📋 Data Export

Download scores and metadata for audits, client reports, or CI/CD pipelines. Exports contain computed metrics only (no copyrighted content).

All data is generated automatically and updated with each crawl. JSON exports contain scores and metadata only (no copyrighted content).

Is this your company?

Monitor your AI visibility score weekly and get alerted when changes happen.

Start Free →

🧭 Self-Diffing (Private Layer)

For owned domains, combine this world snapshot with private drift + regression history.
Template Drift
Track in My Site
Drift → Traffic Impact
In development coming soon
Regression Incidents
Track in My Site
Internal Linking
Deep Audit graph
Semantic Structure
GEO view in Deep Audit
Content Quality
Thin/duplicate tracking

🕒 History

Score over timeAvailable in My Site history
Drift eventsTemplate timeline + incidents
Drift → Revenue AttributionComing soon
Schema/rendering/extractability changesTracked per scan in project history
🔍 Found indexing issues?
Run a free deep audit to diagnose crawled-not-indexed, soft 404s, redirect errors, and more.
Free Deep Audit → GSC Error Guide →