| Core function | Google Search Console (GSC — search.google.com/search-console) is Google's free tool that shows how Google's systems have processed your website: which pages are indexed, how many impressions and clicks each page receives from Google Search, what search queries trigger your pages, which pages have indexing errors, what structured data Google has detected, Core Web Vitals status from Google's CrUX dataset, and what manual actions (penalties) exist on the property. GSC data comes directly from Google's own systems — it shows Google's actual view of your site, including how Googlebot rendered pages, which URLs Google considers canonical, and which structured data features are eligible for rich results. This is retrospective data: it reflects what Google has already done with your site, typically with a 2–3 day lag. GSC requires domain or URL-prefix property verification via DNS record, HTML file, HTML tag, Google Analytics, or Google Tag Manager. | A crawl-based technical SEO and AI visibility auditor. Validates JSON-LD structured data at property level (which specific required property is missing, with corrected markup), surfaces URL-level CrUX Core Web Vitals (the same p75 field data GSC uses, but per-URL rather than aggregated), detects JavaScript rendering gaps, validates canonical tags, audits robots.txt and sitemap configuration, detects broken links, and scores five GEO/AI visibility signals. Free with no signup and no property verification. Prospective audit: identifies technical issues that prevent pages from indexing or ranking, rather than reporting what has already happened. |
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| Search query and ranking data | GSC's Performance report is the definitive source of organic search data for a verified property: clicks, impressions, average position, and CTR for every search query that triggered your pages over the last 16 months. Data is filterable by query, page, country, device, and search type (web, image, video, news). This is the only free source of click-accurate keyword data for your own site — all third-party keyword rank trackers use estimated data, while GSC shows actual Google Search data. The Search Appearance filter shows which rich result types (sitelinks, review snippets, FAQPage, HowTo, etc.) each page has appeared with, and how those features affect CTR. Key limitation: GSC data is available only for verified properties (you must prove ownership); data is only available for Google Search (not Bing, DuckDuckGo, or AI search systems); and historical data is limited to 16 months. | No search query, ranking, or keyword data. DeepSEOAnalysis audits technical conditions — it does not access Google's index data or query logs. For keyword and ranking data, GSC is the primary free source; third-party rank trackers (Semrush, Ahrefs, SE Ranking) provide estimated multi-engine ranking data. The complementary workflow: use GSC to identify which queries have declining CTR or rankings, then use DeepSEOAnalysis to audit whether technical issues (missing structured data, poor AI visibility, canonical problems) are contributing to the decline. |
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| Index coverage and crawl diagnostics | GSC's Index Coverage (now Pages report) shows which URLs Google has indexed and which are excluded, with specific exclusion reasons: Discovered (not crawled yet — crawl budget issue), Crawled but not indexed (crawled but Google chose not to index — quality signal), Excluded by noindex directive, Redirect error, Soft 404, Server error (5xx), Blocked by robots.txt, and more. This is authoritative: it reflects what Google has actually observed, not what your site claims. The URL Inspection Tool shows how Google last crawled, rendered, and indexed a specific URL — including the rendered HTML Googlebot received after JavaScript execution. This is the ground truth for debugging why a specific page isn't indexed or isn't receiving traffic. | Audits technical factors that influence indexability: meta robots noindex tags (which would cause GSC's "Excluded by noindex" status), robots.txt blocks, canonical tag validity (canonical pointing to a redirect, non-200 URL, or the wrong destination), sitemap inclusion and format validity, and HTTP status codes. These are the technical signals that produce GSC's coverage report results. The audit does not show whether Google has actually indexed a URL — that authoritative answer comes only from GSC itself. Use DeepSEOAnalysis to identify technical causes; use GSC URL Inspection to confirm Google's actual indexing status. |
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| Structured data reporting | GSC's Enhancements section reports structured data that Google has detected on your site: for each supported rich result type (FAQ, HowTo, Product, Review, Recipe, etc.), GSC shows how many items were detected, how many are valid, how many have warnings, and how many have errors. The errors reflect what Google's structured data processing system found — specifically properties that are required for rich result eligibility but absent. GSC structured data reports update with a 1–7 day lag after a page is crawled. Limitation: GSC reports structured data that Google has detected in its crawl — it does not proactively validate new structured data you've added. It also doesn't show the specific incorrect value, only the error type (missing required field, invalid value format), which requires cross-referencing with the Rich Results Test. | Property-level structured data validation at crawl time: for each schema type found on the page (Article, Product, FAQPage, HowTo, LocalBusiness, BreadcrumbList, etc.), the audit identifies exactly which required properties are present and which are missing, with the specific property name (e.g., "missing required: image — add @type ImageObject with url property") and a corrected JSON-LD snippet. The audit also detects whether structured data is server-rendered in the initial HTML (Googlebot sees it immediately) or only in the client-rendered DOM (Googlebot may miss it if JavaScript isn't executed before it processes the page). This is real-time validation on demand — not a retrospective report from Google's crawl. |
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| Core Web Vitals measurement | GSC's Core Web Vitals report shows LCP, CLS, and INP performance for your verified property using CrUX field data (real Chrome user measurements at p75). Pages are grouped by performance threshold (Good, Needs Improvement, Poor) with aggregated counts. The report shows trends over time and identifies URL groups with similar performance characteristics. GSC CWV data is at the URL group level (groups of similar URLs), not individual URL level — a single page's specific CWV values may be masked by the group average. The report updates weekly. | URL-level CrUX field data — LCP, CLS, and INP at p75 for the specific URL being audited, from the same Google CrUX dataset GSC uses. The per-URL view provides granularity that GSC's URL-group aggregation obscures. Core Web Vitals data appears in the audit alongside structured data findings, AI visibility score, and canonical analysis — so performance issues are diagnosed in the context of the full technical SEO picture. No property verification required. |
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| AI visibility and GEO scoring | GSC has no AI visibility or GEO (Generative Engine Optimisation) features. It does not check whether AI search crawlers (GPTBot, ClaudeBot, PerplexityBot) can access your site, whether llms.txt is present, whether FAQPage or HowTo JSON-LD is server-rendered (a GEO prerequisite), whether content is structured for AI citation (question-heading ratio, content chunkability), or how your site appears in AI-generated search answers. GSC's data is limited to Google Search — not Perplexity, ChatGPT, Claude, or other AI search systems. | Five-signal GEO/AI visibility score: AI crawler robots.txt access, llms.txt presence and structure, FAQPage/HowTo JSON-LD server-rendered in initial HTML, question-heading ratio (≥20% of H2/H3 headings as questions), and content chunkability (average section ≤400 words per heading). This AI-readiness audit is not available in GSC and is one of the primary differentiators of DeepSEOAnalysis. |
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| Best fit | GSC is required for any serious SEO program — it is the only authoritative source of Google's view of your site. Use GSC for: verifying indexing status of specific URLs, diagnosing why a page disappeared from search results, reviewing which queries and pages receive organic traffic, monitoring structured data errors Google detected after your last deploy, checking for manual actions or security issues, and submitting sitemaps and requesting indexing of new content. | Best for proactive technical SEO diagnosis and AI visibility: finding technical issues before Google's next crawl reports them, validating structured data at property level rather than waiting for GSC's error reports, checking AI crawler access without waiting for CrUX data to accumulate, and getting a shareable audit URL for any page without property verification. Natural workflow: DeepSEOAnalysis for proactive per-URL technical audit → GSC for Google's authoritative view of what was actually crawled, indexed, and ranked. |
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