Begin with access and usability because a strong service message cannot compensate for a page that search systems cannot crawl reliably or a customer cannot use. Run these checks on representative service, genuine location, gallery, and contact templates rather than assuming the homepage represents the entire site.
Core Web Vitals and mobile performance
Evidence required: PageSpeed Insights output, Search Console Core Web Vitals reporting where available, direct mobile tests on representative service and location pages, and inspection of the heaviest media templates.
Pass condition: primary page content loads and remains usable on mobile, key controls do not shift into unusable positions, and no obvious performance defect blocks navigation, calling, or form completion.
Fail condition: important templates repeatedly show severe load or interaction defects, oversized media dominates transfer weight, or page movement and scripting make primary controls difficult or impossible to use.
Severity: high when the defect affects a core service, contact, or booking path; otherwise grade it by template reach and affected traffic. Owner: web developer or site owner responsible for templates, scripts, media, hosting, and delivery configuration.
Corrective action: resize and compress media, remove unnecessary blocking resources, simplify heavy scripts, improve caching or delivery where appropriate, and fix the component that created the observed failure.
Google PageSpeed Insights, WP Rocket, and Cloudflare remain source-listed tools for this check. Validation step: repeat the same test on the same template after deployment and complete the affected mobile task end to end. Treat lab metrics as diagnostic evidence, not as a promise of ranking improvement.
Structured data accuracy
Evidence required: the live JSON-LD, the visible information on the page, and output from Google Rich Results Test or another syntax validator. TechnicalSEO.com remains a source-listed tooling reference.
Pass condition: markup is syntactically valid, reflects content that is actually visible and accurate, and uses properties appropriate to the real entity and service information. Fail condition: markup publishes information that is absent from the page, conflicts with the site or Business Profile, exaggerates service coverage, or uses unsupported properties as though they were factual business data.
Severity: medium unless the markup contains materially false business information, which should be corrected promptly. Owner: SEO implementer or developer who controls page templates and JSON-LD. Corrective action: remove unsupported fields, correct inaccurate values, align structured data with visible content, and keep service-area claims truthful.
Do not present structured data as a special prerequisite for Google AI features or as a guaranteed ranking lever. Validation step: retest the deployed markup and compare the rendered page with the structured data field by field. A successful validation result confirms the tested markup condition only; it does not guarantee a rich result.
Mobile-first responsive design
Evidence required: direct checks of menus, forms, click-to-call controls, quote or booking paths, image galleries, service content, and contact information across common mobile viewport sizes, plus relevant Search Console evidence where available.
BrowserStack and Google Search Console remain source-listed tools. Pass condition: essential content and primary actions remain available on mobile, text is readable without horizontal scrolling, and controls can be used without overlap or accidental taps.
Fail condition: mobile users lose essential content, cannot submit a request, cannot reach contact information, or encounter navigation and components that obscure the page. Severity: critical when the defect blocks a primary contact or service-request action; high when it affects navigation or important content across a template.
Owner: web developer, designer, or site owner responsible for responsive components. Corrective action: repair the failing responsive template or component, then test more than one page type so the fix is not limited to the homepage.
Validation step: repeat the exact failed task on a mobile device, from the original entry page through the expected confirmation or contact state.
XML sitemap coverage
Evidence required: the current XML sitemap, Search Console sitemap status, and a comparison between canonical indexable URLs and the URLs submitted in the sitemap. Yoast SEO and Rank Math remain source-listed tools that may generate sitemaps where installed.
Pass condition: the sitemap is reachable, contains the canonical URLs the business intends to make indexable, excludes obvious blocked or non-canonical variants, and is accepted without material fetch errors in Search Console.
Fail condition: core service or genuine location pages are absent, redirected or non-canonical URLs dominate the file, or the submitted sitemap cannot be fetched. Severity: medium, increasing when discovery of important pages is materially impaired.
Owner: SEO implementer or developer responsible for sitemap generation and canonical rules. Corrective action: repair sitemap generation, canonical handling, and submission. Do not claim that submitting a sitemap causes instant discovery or indexing.
Validation step: fetch the sitemap after deployment, compare it with the intended canonical set, and review Search Console status again after Google has processed the submission.
HTTPS and secure customer paths
Evidence required: browser checks on key pages, certificate status, redirect behavior from insecure variants, and direct testing of form or booking submissions over the secure version.
Let's Encrypt and SSL Labs remain source-listed references. Pass condition: customer-facing pages resolve securely, insecure variants redirect consistently, and forms or booking paths do not show certificate or mixed-content problems that affect use.
Fail condition: certificate warnings, insecure form actions, mixed content that breaks functionality, or duplicate accessible protocol versions create user or crawl confusion. Severity: critical for certificate or form-security failures; otherwise high when sitewide consistency or key customer paths are affected.
Owner: developer or hosting administrator. Corrective action: install or renew the certificate correctly, enforce secure canonical URLs and redirects, and replace insecure asset calls that create the observed defect.
Validation step: retest the full customer path in a clean browser session and repeat the same security diagnostic that identified the original failure.