Home / Check catalog / 6. Schema, Local, Trust, Deep Audit / 6.57 Advanced Technical SEO, Rendering, Indexation, Canonical Systems, Log Analysis & AI Crawlability

6.57 Advanced Technical SEO, Rendering, Indexation, Canonical Systems, Log Analysis & AI Crawlability

200 checks in Schema, Local, Trust, Deep Audit. Automated Its subsection has a live automated checker in the engine.

Rendering Pipeline — CSR, SSR, Ssg, Hybrid Compatibility

ID	Check	Passes when	Weight	Runs
6.57.01	Validate server-side rendered HTML detectable	Detectable	Critical	Deterministic
6.57.02	Validate SEO-critical content present pre-JS	Present	Critical	Deterministic
6.57.03	Validate hydration completes without errors	No errors	Heavy	Deterministic
6.57.04	Validate core content visible in raw HTML	Visible	Heavy	Deterministic
6.57.05	Validate JS rendering time reasonable	Fast	Heavy	Deterministic
6.57.06	Detect differences between raw HTML & JS-rendered HTML	Minimal differences	Medium	Deterministic
6.57.07	Validate search engines can fully render page	Fully renderable	Medium	Deterministic
6.57.08	Validate hydration does not hide critical content	No hiding	Medium	Deterministic
6.57.09	Detect rehydration flicker (FOUC/FOIT)	None	Medium	Deterministic
6.57.10	Validate launcher scripts lightweight	Lightweight	Medium	Deterministic

Dom Analysis — Structure, Mutations & Render Layer Consistency

ID	Check	Passes when	Weight	Runs
6.57.11	Validate DOM stable post-load	Stable	Heavy	Deterministic
6.57.12	Validate DOMContentLoaded executed cleanly	Clean	Heavy	Deterministic
6.57.13	Validate no infinite DOM mutation loops	None	Heavy	Deterministic
6.57.14	Validate shadow DOM content indexed correctly	Indexed	Medium	Deterministic
6.57.15	Detect hidden or lazy DOM elements causing crawl issues	None	Medium	Deterministic
6.57.16	Validate no DOM overgrowth (excessive nodes)	Lean	Medium	Deterministic
6.57.17	Validate component hydration order logical	Logical	Medium	Deterministic
6.57.18	Validate DOM mutation observers not blocking	Non-blocking	Medium	Deterministic
6.57.19	Validate structured content visible in both SSR & CSR	Visible	Medium	Deterministic
6.57.20	Validate prerendered content consistent with runtime content	Consistent	Medium	Deterministic

JavaScript SEO — Compatibility & Indexation

ID	Check	Passes when	Weight	Runs
6.57.21	Validate page indexable when JS disabled	Indexable	Critical	Deterministic
6.57.22	Validate scripts not blocking initial render	Non-blocking	Heavy	Deterministic
6.57.23	Validate defer/async optimized correctly	Optimized	Heavy	Deterministic
6.57.24	Validate JS bundles minimal	Minimal	Heavy	Deterministic
6.57.25	Detect inline script bloat	Minimal	Medium	Deterministic
6.57.26	Validate lazy-loaded scripts behave correctly	Correct	Medium	Deterministic
6.57.27	Validate third-party scripts optimized	Optimized	Medium	Deterministic
6.57.28	Validate hydration scripts under size thresholds	Under threshold	Medium	Deterministic
6.57.29	Detect client-only content blocking rendering	None	Medium	Deterministic
6.57.30	Validate script execution order correct	Correct	Medium	Deterministic

Technical Visibility — Crawlability & Render Access

ID	Check	Passes when	Weight	Runs
6.57.31	Validate crawlable URL (200 status, not blocked)	Crawlable	Heavy	Deterministic
6.57.32	Validate robots.txt not blocking essential resources	Unblocked	Heavy	Deterministic
6.57.33	Validate meta robots set correctly (index/follow)	Correct	Heavy	Deterministic
6.57.34	Validate canonical tag presence	Present	Heavy	Deterministic
6.57.35	Validate canonical tag self-referential where required	Correct	Medium	Deterministic
6.57.36	Detect conflicting canonical chains	None	Medium	Deterministic
6.57.37	Validate href tags accessible to crawlers	Accessible	Medium	Deterministic
6.57.38	Detect JS-injected links invisible to crawlers	None	Medium	Deterministic
6.57.39	Validate pagination discoverable	Discoverable	Medium	Deterministic
6.57.40	Validate JS routers (SPA) provide crawl fallback	Fallback present	Medium	Deterministic

Resource Loading — Optimization & Crawler Access

ID	Check	Passes when	Weight	Runs
6.57.41	Validate CSS accessible	Accessible	Heavy	Deterministic
6.57.42	Validate preconnect/preload tags used correctly	Correct	Heavy	Deterministic
6.57.43	Validate critical CSS inline	Inline	Heavy	Deterministic
6.57.44	Validate fonts optimized for speed	Optimized	Medium	Deterministic
6.57.45	Validate fonts not render-blocking	Non-blocking	Medium	Deterministic
6.57.46	Validate resource prioritization correct	Correct	Medium	Deterministic
6.57.47	Validate CDN caching effective	Effective	Medium	Deterministic
6.57.48	Validate images accessible to crawlers	Accessible	Medium	Deterministic
6.57.49	Validate images not JS-injected late	No late injection	Medium	Deterministic
6.57.50	Validate resource hints not misconfigured	Correct	Medium	Deterministic

Indexation Health — Coverage, Duplication & Canonical Accuracy

ID	Check	Passes when	Weight	Runs
6.57.51	Validate URL indexable	Indexable	Critical	Deterministic
6.57.52	Validate no-index pages correctly flagged	Correct	Critical	Deterministic
6.57.53	Validate canonical and indexed URL match	Match	Heavy	Deterministic
6.57.54	Validate indexation ratio healthy	Healthy	Heavy	Deterministic
6.57.55	Validate no accidental deindexing	None	Heavy	Deterministic
6.57.56	Detect soft 404s	None	Medium	Deterministic
6.57.57	Validate parameterized URLs handled properly	Correct	Medium	Deterministic
6.57.58	Detect infinite URL parameter loops	None	Medium	Deterministic
6.57.59	Validate indexation freshness	Fresh	Medium	Deterministic
6.57.60	Validate page included in Google Index	Included	Medium	Deterministic

Sitemaps — XML, Index Maps & Advanced Mapping

ID	Check	Passes when	Weight	Runs
6.57.61	Validate sitemap.xml accessible	Accessible	Heavy	Deterministic
6.57.62	Validate sitemap uses correct schema	Correct	Heavy	Deterministic
6.57.63	Validate sitemap index structure correct	Correct	Heavy	Deterministic
6.57.64	Validate all important pages included	Included	Heavy	Deterministic
6.57.65	Validate no broken URLs in sitemap	None	Medium	Deterministic
6.57.66	Validate lastmod dates accurate	Accurate	Medium	Deterministic
6.57.67	Validate multiple sitemaps correctly linked	Correct	Medium	Deterministic
6.57.68	Validate video/image/news sitemaps (if applicable)	Correct	Medium	Deterministic
6.57.69	Validate sitemap file sizes within limits	Within limits	Medium	Deterministic
6.57.70	Validate sitemap URLs canonicalized	Canonical	Medium	Deterministic

Canonical Systems — Duplication, Segmentation & URL Normalization

ID	Check	Passes when	Weight	Runs
6.57.71	Validate canonical tag correct	Correct	Critical	Deterministic
6.57.72	Validate canonical consistency across pages	Consistent	Heavy	Deterministic
6.57.73	Validate no self-referencing errors	Correct	Heavy	Deterministic
6.57.74	Validate canonical not conflicting with hreflang	Non-conflicting	Heavy	Deterministic
6.57.75	Detect canonical chains	None	Medium	Deterministic
6.57.76	Validate correct absolute URLs used	Absolute	Medium	Deterministic
6.57.77	Validate correct canonical for faceted pages	Correct	Medium	Deterministic
6.57.78	Detect duplicate canonical clusters	None	Medium	Deterministic
6.57.79	Validate canonical logic for pagination	Correct	Medium	Deterministic
6.57.80	Validate product variations canonicalized properly	Correct	Medium	Deterministic

URL Architecture — Structure, Depth, Parameters & Normalization

ID	Check	Passes when	Weight	Runs
6.57.81	Validate URL structure logical and hierarchical	Logical	Heavy	Deterministic
6.57.82	Validate URLs human-readable	Readable	Heavy	Deterministic
6.57.83	Validate URL depth reasonable	Reasonable	Heavy	Deterministic
6.57.84	Validate hyphens used correctly	Correct	Medium	Deterministic
6.57.85	Validate URLs lowercase	Lowercase	Medium	Deterministic
6.57.86	Detect URL duplication (www vs non-www)	None	Medium	Deterministic
6.57.87	Validate trailing slash normalized	Normalized	Medium	Deterministic
6.57.88	Validate redirect consistency for URL variations	Consistent	Medium	Deterministic
6.57.89	Validate UTM parameters stripped for indexation	Stripped	Medium	Deterministic
6.57.90	Detect infinite URL parameter combinations	None	Medium	Deterministic

Indexation Priority & Discoverability Signals

ID	Check	Passes when	Weight	Runs
6.57.91	Validate page receives crawl priority	Prioritized	Heavy	Deterministic
6.57.92	Validate high-value pages indexed faster	Fast	Heavy	Deterministic
6.57.93	Validate freshness signals correctly interpreted	Correct	Heavy	Deterministic
6.57.94	Detect indexation delays	None	Medium	Deterministic
6.57.95	Validate pages reachable via clean link paths	Reachable	Medium	Deterministic
6.57.96	Validate structured metadata improves indexation	Improved	Medium	Deterministic
6.57.97	Validate internal linking pushes crawl depth	Effective	Medium	Deterministic
6.57.98	Detect crawl bottlenecks	None	Medium	Deterministic
6.57.99	Validate indexation aligns with canonical expectations	Aligned	Medium	Deterministic
6.57.100	Validate indexing signals consistent with sitemap	Consistent	Medium	Deterministic

Hreflang — International Targeting, Language Pairs & Correctness

ID	Check	Passes when	Weight	Runs
6.57.101	Validate hreflang present for multi‑language sites	Present	Critical	Deterministic
6.57.102	Validate hreflang return tags correct	Correct	Critical	Deterministic
6.57.103	Validate language codes ISO‑correct	Correct	Heavy	Deterministic
6.57.104	Validate regional codes correctly assigned	Correct	Heavy	Deterministic
6.57.105	Validate self‑reference included	Included	Heavy	Deterministic
6.57.106	Detect incorrect x‑default usage	Correct	Medium	Deterministic
6.57.107	Validate country/language pairs not mismatched	Correct	Medium	Deterministic
6.57.108	Validate hreflang not contradicting canonical	Non‑conflicting	Medium	Deterministic
6.57.109	Detect incomplete hreflang clusters	None	Medium	Deterministic
6.57.110	Validate correct hreflang for pagination (if relevant)	Correct	Medium	Deterministic

Pagination — Rel Prev/Next, Canonicals & Crawl Pathing

ID	Check	Passes when	Weight	Runs
6.57.111	Validate paginated pages canonicalized properly	Correct	Heavy	Deterministic
6.57.112	Validate paginated URLs discoverable	Discoverable	Heavy	Deterministic
6.57.113	Validate content not split in harmful ways	Healthy	Heavy	Deterministic
6.57.114	Validate rel=prev/next logic (if used)	Correct	Medium	Deterministic
6.57.115	Validate page 1 canonicalized to main URL	Correct	Medium	Deterministic
6.57.116	Detect infinite pagination loops	None	Medium	Deterministic
6.57.117	Validate paginated series consistent	Consistent	Medium	Deterministic
6.57.118	Validate pagination classification correct (blogs/products)	Correct	Medium	Deterministic
6.57.119	Detect duplicate pagination clusters	None	Medium	Deterministic
6.57.120	Validate canonical-to-root strategy for endless scroll	Correct	Medium	Deterministic

Faceted Navigation — URL Control, Canonicals & Crawl Budget Protection

ID	Check	Passes when	Weight	Runs
6.57.121	Validate faceted navigation not fully indexable	Controlled	Critical	Deterministic
6.57.122	Validate canonical logic correct for facets	Correct	Heavy	Deterministic
6.57.123	Validate no infinite combinations of facets	None	Heavy	Deterministic
6.57.124	Validate parameter handling consistent (filters/sorts/types)	Consistent	Heavy	Deterministic
6.57.125	Validate noindex used where needed	Correct	Medium	Deterministic
6.57.126	Validate robots rules preventing crawl traps	Effective	Medium	Deterministic
6.57.127	Detect conflicting facet parameter URLs	None	Medium	Deterministic
6.57.128	Validate filters produce predictable & stable URLs	Stable	Medium	Deterministic
6.57.129	Validate canonical route remains unfragmented	Unfragmented	Medium	Deterministic
6.57.130	Validate user‑facing filters not interfering with indexing	Non‑interfering	Medium	Deterministic

Duplication Control — Content Parity, Mirrors, Variants & Canonical Resolution

ID	Check	Passes when	Weight	Runs
6.57.131	Validate duplicate pages detectable	Detectable	Heavy	Deterministic
6.57.132	Validate duplication ratio acceptable	Acceptable	Heavy	Deterministic
6.57.133	Validate canonical resolves duplication	Resolved	Heavy	Deterministic
6.57.134	Validate internal duplication minimal	Minimal	Medium	Deterministic
6.57.135	Validate URL variants consolidated	Consolidated	Medium	Deterministic
6.57.136	Detect mirror pages (HTTP/HTTPS/WWW variants)	None	Medium	Deterministic
6.57.137	Validate product variations handled correctly	Correct	Medium	Deterministic
6.57.138	Detect session ID duplication	None	Medium	Deterministic
6.57.139	Validate multilingual duplication avoided	Avoided	Medium	Deterministic
6.57.140	Validate soft duplication (similar content) under control	Controlled	Medium	Deterministic

International SEO — Market Targeting, GEO Signals & Localized Indexation

ID	Check	Passes when	Weight	Runs
6.57.141	Validate geotargeting settings correct (Search Console)	Correct	Heavy	Deterministic
6.57.142	Validate multilingual sitemap integrity	Correct	Heavy	Deterministic
6.57.143	Validate language-specific indexation correct	Correct	Heavy	Deterministic
6.57.144	Validate content language detection correct	Correct	Medium	Deterministic
6.57.145	Validate local alternates correctly listed	Listed	Medium	Deterministic
6.57.146	Detect URL language mismatches	None	Medium	Deterministic
6.57.147	Validate international canonical alignment	Aligned	Medium	Deterministic
6.57.148	Validate currency/units localized properly	Localized	Medium	Deterministic
6.57.149	Validate hreflang-to-content matching accurate	Accurate	Medium	Deterministic
6.57.150	Validate international pages included in correct sitemaps	Included	Medium	Deterministic

Log Analysis — Bot Activity, Request Patterns & Health Signals

ID	Check	Passes when	Weight	Runs
6.57.151	Validate Googlebot accessing page	Accessing	Critical	Deterministic
6.57.152	Validate Googlebot not blocked at any resource	Unblocked	Critical	Deterministic
6.57.153	Validate crawl frequency appropriate	Appropriate	Heavy	Deterministic
6.57.154	Detect significant crawl drops	No drops	Heavy	Deterministic
6.57.155	Detect Googlebot errors in logs	None	Heavy	Deterministic
6.57.156	Validate rendering bots accessing JS/CSS	Access	Medium	Deterministic
6.57.157	Validate mobile Googlebot used where applicable	Mobile	Medium	Deterministic
6.57.158	Detect excessive redirects in crawl logs	None	Medium	Deterministic
6.57.159	Validate image/video indexing bots accessing assets	Accessing	Medium	Deterministic
6.57.160	Detect crawl anomalies during updates	None	Medium	Deterministic

Crawl Budget — Optimization, Prioritization & Waste Removal

ID	Check	Passes when	Weight	Runs
6.57.161	Validate crawl waste minimal	Minimal	Critical	Deterministic
6.57.162	Validate high‑value pages receiving priority	Priority	Heavy	Deterministic
6.57.163	Validate unnecessary URLs suppressed	Suppressed	Heavy	Deterministic
6.57.164	Detect spider traps	None	Heavy	Deterministic
6.57.165	Validate duplicate URLs not wasting crawl budget	Efficient	Medium	Deterministic
6.57.166	Validate large JS bundles not harming crawl budget	No harm	Medium	Deterministic
6.57.167	Validate minimal faceted navigation exploration	Minimal	Medium	Deterministic
6.57.168	Validate correct canonical signals reduce crawl waste	Effective	Medium	Deterministic
6.57.169	Validate unnecessary query parameters disallowed	Disallowed	Medium	Deterministic
6.57.170	Validate server responses fast enough for efficient crawl	Fast	Medium	Deterministic

Bot Behavior — Accessibility, Consistency & Bot-Specific Readiness

ID	Check	Passes when	Weight	Runs
6.57.171	Validate BingBot accessing page	Accessing	Heavy	Deterministic
6.57.172	Validate AI-crawlers (OpenAI, Perplexity, Anthropic) allowed	Allowed	Heavy	Deterministic
6.57.173	Validate no bot-specific blocking	None	Heavy	Deterministic
6.57.174	Detect spoofed bot activity	Minimal	Medium	Deterministic
6.57.175	Validate proper parsing of structured data by bots	Proper	Medium	Deterministic
6.57.176	Validate robots meta tags readable by bots	Readable	Medium	Deterministic
6.57.177	Validate AI crawlers receive same content as users	Consistent	Medium	Deterministic
6.57.178	Validate no dynamic cloaking	None	Medium	Deterministic
6.57.179	Validate no IP-based content differentiation	None	Medium	Deterministic
6.57.180	Validate new URLs discovered by bots in logs	Discoverable	Medium	Deterministic

Internal Pathing — Link Structure, Click-Depth & Discoverability

ID	Check	Passes when	Weight	Runs
6.57.181	Validate click-depth < 4	<4	Heavy	Deterministic
6.57.182	Validate internal link paths clean	Clean	Heavy	Deterministic
6.57.183	Validate no orphan pages	None	Heavy	Deterministic
6.57.184	Validate contextual links relevant	Relevant	Medium	Deterministic
6.57.185	Validate breadcrumb markup correct	Correct	Medium	Deterministic
6.57.186	Validate critical pages linked from nav/menu	Linked	Medium	Deterministic
6.57.187	Validate deep pages still discoverable	Discoverable	Medium	Deterministic
6.57.188	Validate footer links structured logically	Logical	Medium	Deterministic
6.57.189	Detect unnecessary nofollow internal links	None	Medium	Deterministic
6.57.190	Validate cross-silo links used correctly	Correct	Medium	Deterministic

Discoverability — AI Findability, Topical Pathing & Crawl Confidence

ID	Check	Passes when	Weight	Runs
6.57.191	Validate AI-friendly sitemap present (llms.txt)	Present	Heavy	Deterministic
6.57.192	Validate embedding-friendly URLs	Friendly	Heavy	Deterministic
6.57.193	Validate topic clusters discoverable by bots	Discoverable	Heavy	Deterministic
6.57.194	Validate navigation hierarchy aligns with topic graph	Aligned	Medium	Deterministic
6.57.195	Validate AI crawlers can reconstruct topic relationships	Reconstructable	Medium	Deterministic
6.57.196	Detect crawl dead ends	None	Medium	Deterministic
6.57.197	Validate pages internally linked by semantic relevance	Relevant	Medium	Deterministic
6.57.198	Validate entity relationships discoverable	Discoverable	Medium	Deterministic
6.57.199	Validate no hidden or gated content blocking AI	None	Medium	Deterministic
6.57.200	Compute Final Technical SEO & AI Crawlability Score	Finalized	Critical	Deterministic

← 6.56 Off-Page SEO, Backlink Quality, Brand Mentions, Knowledge Graph Expansion & AI Link Signals6.58 Performance, Core Web Vitals, Speed, User Experience Signals & AI-Usability Interpretation →

Run these checks on your site

A Deep Audit scores every check here that applies to your page, then an AI pass of up to 150 checks. Included on Pro and Ultra, or $9 for one audit.

See plans

Machine-readable: catalog totals and the full catalog as JSON (IDs, section, weight, status).