SEO Log File Analysis: Verify Googlebot and Find Crawl Gaps
A reproducible log analysis workflow: choose the capture layer, verify crawler identity, preserve the URL denominator and turn missing or failing requests into testable findings.
Metricum Lab knowledge base
Technical SEO guides, research & operating checklists
Practical material for teams that need exact tools, thresholds, exports, implementation steps and primary sources—not generic SEO advice.
Guides you can execute
Long-form guides built for the full workflow: audit, implementation, handoff and verification.
How to Fix INP: Trace the Slow Interaction Before Changing Code
Move from a field warning to one interaction, a trace-backed change and a correct result. Includes a local lab with a timer fallback.
How to Fix Largest Contentful Paint (LCP): Diagnose TTFB, Load Delay, Load Time & Render Delay
A root-cause LCP debugging guide: identify the actual LCP candidate, split the metric into four subparts, fix image bytes, discovery, priority, server and rendering bottlenecks, then validate the result with real users.
How to Test Core Web Vitals Correctly: CrUX vs PageSpeed Insights vs Lighthouse vs RUM
A field-first Core Web Vitals testing framework for deciding what CrUX, PageSpeed Insights, Lighthouse and first-party RUM can actually prove—and how to move from a real-user signal to a reproducible fix.
SEO Redirects: 301 vs 302, Redirect Chains, Canonicals & Migration Validation
Treat redirects as a URL-state migration contract: choose status semantics deliberately, map every old URL to an equivalent final destination, align canonical signals, and gate releases with reproducible validation.
How to Create an SEO Report That Leads to Decisions: Search, Crawl, Core Web Vitals & User Behavior
A decision-ready SEO reporting framework for combining search demand, technical eligibility, page experience, links, user behavior and business outcomes without mixing incompatible metrics.
Programmatic SEO at Scale: Data Contracts, Page Eligibility & Automated QA
An engineering framework for programmatic SEO: define the search task, version the source data, decide page eligibility before rendering, automate preflight QA and expand only after cohort validation.
Faceted Navigation SEO: How to Control Crawl & Indexation Without Killing Useful Filter Pages
A reproducible faceted-navigation workflow: map the URL grammar, decide which filter states deserve search landing pages, stop useless crawl paths, and validate the result with logs and Search Console.
Crawled — Currently Not Indexed: How to Diagnose Why Google Won't Index a Page
An evidence-first workflow for Crawled — currently not indexed: confirm the current URL state, classify cohorts, rule out technical and duplicate causes, test value hypotheses and validate one intervention at a time.
Internal Linking for SEO: How to Build a Crawlable, Scalable Link Architecture
A data-driven internal linking methodology: model the site as a graph, find strong donors and under-supported targets, match them by relevance, automate safely and validate the result.
JavaScript SEO: A Rendering & Indexing Debugging Guide for SPA, SSR and Hybrid Sites
An evidence-first JavaScript SEO workflow for SPA, SSR and hybrid sites: compare server HTML, browser DOM and Google-rendered output before changing the rendering architecture.
How to Fix Cumulative Layout Shift (CLS) with Chrome DevTools and AI Agents
An evidence-first CLS debugging workflow: start with CrUX and Search Console, isolate the largest shift cluster, use DevTools AI or an MCP agent carefully, then verify the fix in RUM.
Technical SEO Audit Checklist 2026: 42 Checks, Tools & Pass/Fail Criteria
42 technical SEO checks with exact menu paths, sample rules, pass criteria, evidence to save and a repeatable verification workflow.