Technical SEO audit
Focuses on crawlability, indexation, rendering, architecture, performance, structured data, and other technical systems.
Technical SEO · Crawlability · Indexation · Website Performance
Technical SEO Audit Services That Turn Website Issues Into Clear Actions
Identify the technical problems that prevent search engines from crawling, rendering, indexing, understanding, and ranking your important pages.
I combine technical crawling, indexation analysis, JavaScript rendering checks, website architecture, Core Web Vitals, structured data, internal linking, server-response analysis, and implementation support to produce a prioritized and measurable technical SEO roadmap.
- Crawl and indexation diagnostics
- Developer-ready recommendations
- Post-fix technical validation
Service overview
What Is a Technical SEO Audit?
A technical SEO audit is a structured review of the systems that help search engines access, process, understand, and index a website.
It examines how the website behaves across crawlers, browsers, mobile devices, search-engine indexes, JavaScript rendering, servers, content-management systems, internal-link structures, structured data, and analytics platforms.
The audit can uncover problems involving crawlability, indexation, rendering, canonicalization, redirects, internal links, website architecture, XML sitemaps, robots directives, Core Web Vitals, mobile usability, duplicate content, hreflang, structured data, server responses, page templates, pagination, faceted navigation, and website migrations.
The objective is to determine not only what is wrong, but also why it matters, how it should be fixed, and how the fix will be validated.
Related services
Continue the workflow
Natural next steps that connect this offering with related work on the same roadmap.
This service sits inside a wider SEO and digital growth system. Strong next steps usually include SEO Website Migration Services and Programmatic SEO Services.
Where the roadmap needs another specialist track, On-Page SEO Optimization Services completes the handoff.
Potential outcomes
What a Technical SEO Audit Can Improve
A technical SEO audit can help remove barriers that limit organic visibility and website performance. Typical outcomes include the following—actual outcomes depend on the website’s authority, content, competition, technical stack, implementation resources, and the quality of the final fixes:
Better crawling and discovery of important pages
Clearer control over which URLs should be indexed
Improved rendering and accessibility of JavaScript content
Fewer duplicate, conflicting, redirected, and low-value URLs
Stronger website architecture and internal-link distribution
Better mobile usability and page-performance foundations
More accurate structured data and international targeting
A prioritized implementation roadmap for developers and stakeholders
Better technical preparation for redesigns, migrations, and website growth
Clearer measurement of implementation and post-fix performance
Service components
What Is Included in the Technical SEO Audit?
Technical Discovery and Baseline Review
I begin by reviewing the website, business model, priority pages, target markets, technical stack, current organic visibility, and conversion paths—so technical findings are evaluated in business context.
- Website size, CMS or framework, and rendering method
- Main page templates and business-critical sections
- Target countries, languages, and organic landing pages
- Search impressions, clicks, and current indexation
- Recent migrations and known technical problems
- Development limitations and priority conversion pages
Crawlability Analysis
Search engines must discover and access important content before it can be indexed or ranked. The audit identifies pages that are blocked, buried, orphaned, or only reachable through fragile crawl paths.
- Internal-link discovery, navigation, and breadcrumbs
- Robots.txt, meta robots, and HTTP header directives
- XML sitemaps, pagination, and JavaScript links
- Orphan pages, broken links, and redirecting links
- Crawl depth, parameter URLs, and faceted navigation
- Blocked resources and competing crawl paths
Indexation Analysis
A page can be crawlable without being indexed, and an indexed page may not be one that should appear in search. The objective is to align the indexable URL set with pages that provide genuine search and business value.
- Indexed URL estimates and Search Console indexing reports
- Sitemap inclusion, canonical selection, and noindex directives
- Duplicate, soft 404, redirected, and low-value indexed pages
- Crawled but not indexed and discovered but not indexed URLs
- Search-result, filter, parameter, tag, and archive pages
- Staging or test URLs that should not remain indexed
Robots.txt and Robots Directive Review
I review whether crawl and indexation directives support the website’s actual strategy—and how robots.txt, meta robots, and X-Robots-Tag interact.
- Robots.txt syntax and blocked CSS or JavaScript
- Blocked page sections and sitemap declarations
- User-agent rules and meta robots tags
- X-Robots-Tag and noindex/follow combinations
- Index/nofollow, image, and snippet restrictions
- Staging-environment crawl and index controls
XML Sitemap Audit
XML sitemaps should help search engines discover valid canonical URLs—not archive every URL the website has ever generated.
- Sitemap availability and sitemap index structure
- Included, redirected, non-canonical, and noindex URLs
- Broken and duplicate URLs across sitemap files
- Language, image, video, and news sitemap variants
- Last-modified dates, sitemap size, and Search Console processing
- Long-term focus on canonical, indexable, valuable pages
HTTP Status Code Analysis
Server responses communicate whether content is available, moved, missing, or experiencing an error—including intermittent and template-wide failures.
- 200 successful pages and incorrect status codes
- 3xx redirects, 404, soft 404, and 410 removed pages
- 429 rate-limited and 5xx server responses
- Broken internal links and removed pages returning 200
- Error pages redirecting to the homepage
- Unstable responses affecting important templates
Redirect Chain, Loop and Mapping Review
Important URLs should normally redirect directly to the final canonical destination. I review chains, loops, temporary redirects used permanently, and conflicts with canonical signals.
- Redirect chains, loops, and multi-hop paths
- Protocol, www, trailing-slash, and case redirects
- Old domains, legacy paths, and language redirects
- Mobile subdomains and CMS-generated redirects
- Irrelevant destinations and homepage fallbacks
- Internal links pointing through redirects
Canonicalization Audit
Canonical tags help search engines identify the preferred version of duplicate or similar pages. The audit aims for consistent, understandable URL ownership.
- Missing, self-referencing, and conflicting canonicals
- Canonicals to redirected, broken, or homepage URLs
- Cross-domain, parameter, and pagination canonicals
- Language-version and template-generated mistakes
- Comparison with internal links, redirects, and sitemaps
- Alignment with hreflang and indexability signals
Duplicate and Near-Duplicate URL Analysis
Duplicate content can be created by technical systems even when the business publishes only one visible page. Recommendations focus on consolidation and URL normalization.
- Parameters, filters, sorting, and session IDs
- HTTP/HTTPS, www, trailing slashes, and case variants
- Print versions, tag archives, and product variations
- Language versions, syndication, and staging URLs
- Canonicals, redirects, noindex, and parameter controls
- Template changes, content consolidation, and sitemap cleanup
Website Architecture Review
Website architecture determines how pages are grouped, discovered, prioritized, and connected—and whether the structure reflects user needs and business priorities.
- Main navigation and category hierarchy
- Service, product, folder, and URL patterns
- Topic hubs, location, and language structure
- Breadcrumbs, pagination, and internal search
- Filter architecture, orphan pages, and click depth
- Alignment with intent, topics, and conversion journeys
Internal Linking Audit
Internal links help search engines discover pages and understand relationships. The audit identifies where internal authority is concentrated, wasted, or missing.
- Links to priority pages and orphan URLs
- Broken and redirecting internal links
- Anchor text and repeated sitewide links
- Contextual, breadcrumb, and related-content modules
- Hub-and-spoke and category-to-item relationships
- JavaScript-generated links and desktop/mobile parity
JavaScript Rendering Audit
JavaScript websites can present different content to users, browsers, and crawlers. I compare raw HTML, rendered output, and indexing behaviour—especially for Next.js, React, Angular, Vue, and Nuxt.
- Server-rendered HTML vs client-rendered content
- Hydration, dynamic metadata, and internal links
- Lazy-loaded content and content behind interactions
- API failures, route handling, and status codes
- Canonical output, structured data, and rendering delays
- Browser console errors and mobile rendering parity
Server-Side Rendering and Static Generation Review
For modern frameworks, I review how pages are generated and delivered—and whether important content and metadata are available in the initial HTML.
- SSR, static generation, and incremental regeneration
- Client-side rendering and dynamic routes
- Caching, revalidation, middleware, and edge rendering
- Fallback behaviour and error handling
- Accurate status codes and discoverable dynamic routes
- Correct canonicals and removed-route responses
Page Template Analysis
A single template issue can affect thousands of pages. Template-level problems are prioritized because fixing one component can improve a large group of URLs.
- Homepage, service, product, and category templates
- Location, article, tag, search, and author pages
- Comparison, programmatic, and language versions
- Metadata logic, headings, canonicals, and schema
- Internal links, mobile layout, and indexation rules
- Empty states, pagination, and page-speed patterns
Core Web Vitals and Page Performance
I review technical factors that affect loading performance and page experience—prioritized by real templates and user impact rather than laboratory scores alone.
- LCP, INP, CLS, TTFB, FCP, and Total Blocking Time
- JavaScript execution, CSS delivery, and font loading
- Image loading, third-party scripts, and server response
- Caching, compression, and CDN behaviour
- Image formats, lazy loading, and code splitting
- Critical CSS, preloading, and script control
Mobile SEO and Usability Review
Search engines primarily evaluate the mobile version of a website. Important content, links, metadata, and structured data should not disappear on mobile.
- Responsive layout and mobile content parity
- Navigation, tap targets, fonts, and viewport settings
- Pop-ups, sticky elements, tables, forms, and images
- Mobile page speed, redirects, and hidden content
- Mobile internal links and structured data
- Calls, bookings, purchases, forms, and language actions
Structured Data Audit
I review structured data for accuracy, relevance, completeness, and consistency with visible page content. Schema can improve understanding and eligibility—but does not guarantee rich results or rankings.
- Organization, Person, Service, Product, and Article
- WebPage, BreadcrumbList, LocalBusiness, and Review
- VideoObject, Event, SoftwareApplication, Dataset, ItemList
- Validation errors and missing required fields
- Incorrect URLs, duplicate entities, and unsupported markup
- Template-wide mistakes and schema conflicts
Hreflang and International SEO Audit
For multilingual or multi-country websites, I review language targeting signals and whether search engines are serving the correct regional URLs.
- Language and country codes with reciprocal annotations
- Self-referencing hreflang and x-default
- Missing, redirected, non-canonical, or broken targets
- Indexability and XML sitemap implementation
- Language-selector links and automatic redirects
- Canonical conflicts and incomplete translated pages
Pagination and Faceted Navigation Audit
Large websites can generate significant crawl and indexation problems through pagination, filters, and sorting. Useful filtered pages may stay indexable; low-value combinations may need consolidation.
- Paginated series and category page access
- Filter, sort, and parameter combinations
- Canonical tags, internal links, and noindex rules
- Robots.txt blocks and empty result pages
- Infinite scroll and load-more functionality
- Search demand, crawl efficiency, and page differentiation
Programmatic SEO Technical Review
For websites generating pages at scale, I evaluate whether technical scale creates index bloat, thin pages, empty pages, or infinite crawl spaces.
- Page-generation rules and data completeness
- URL patterns and indexation thresholds
- Template differentiation and empty pages
- Duplicate combinations and dynamic metadata
- Structured data, internal linking, and sitemaps
- Canonicalization, page lifecycle, and expired entities
Ecommerce Technical SEO Audit
For ecommerce and marketplace websites, I document how products and categories should behave when inventory, variations, categories, or sellers change.
- Product, category, variation, filter, and sort URLs
- Pagination, out-of-stock, and discontinued products
- Product schema, merchant information, and reviews
- Canonicals, internal search, and duplicate descriptions
- Breadcrumbs, image delivery, and dynamic inventory
- International versions and seasonal collection expiry
Local SEO Technical Review
For local and multi-location businesses, I check whether local pages are technically distinct, accessible, and correctly connected to the wider website.
- Location, service-area, and branch pages
- Local business schema and address consistency
- Opening hours, map embeds, and internal linking
- Duplicate city pages, indexation, and canonicals
- Google Business Profile landing pages
- Mobile calls and form completion paths
Image SEO Audit
Images affect performance, accessibility, visibility, and user trust. Recommendations focus on both performance and meaningful accessibility.
- File size, dimensions, format, and responsive delivery
- Lazy loading, alt text, and file names
- Image sitemaps and broken images
- Width/height attributes and layout shifts
- CDN behaviour and search accessibility
- Decorative vs informational, product, and portfolio images
Video SEO Audit
For websites using video, I evaluate whether video content supports the page’s purpose and can be understood beyond the embedded player.
- Video discoverability and page structure
- Thumbnails, titles, descriptions, and transcripts
- Captions, structured data, and video sitemaps
- Embedding, loading performance, and indexability
- Dedicated watch pages and third-party hosting
Security and HTTPS Review
Basic security and protocol consistency support user trust and technical quality. This is not a full cybersecurity assessment—it identifies SEO-relevant protocol issues.
- HTTPS availability and HTTP redirects
- Mixed content and certificate errors
- Canonical, sitemap, internal-link, and hreflang protocol
- Security headers where relevant
- Staging exposure and indexed development environments
Server and Hosting Review
Server performance and configuration can affect crawling, uptime, speed, and reliability—including how crawlers encounter errors, rate limits, and waste.
- Response time, error rates, and redirect logic
- Compression, caching, and CDN configuration
- Rate limiting, bot blocking, and geographic latency
- Server headers, HTTP versions, and hosting instability
- Maintenance responses and crawler-facing failures
Log File Analysis
Where suitable log data is available and the project scope justifies it, server log analysis shows how search-engine crawlers actually interact with the website.
- Most and least crawled important URLs
- Status codes seen by crawlers and crawl frequency
- Crawl waste, parameter crawling, and orphan URLs
- Redirected URLs, error responses, and bot activity
- Especially useful for ecommerce, publishers, and JS platforms
Analytics and Search Tracking Review
Technical changes should be measurable. I review whether organic traffic, conversions, and URL comparisons can be validated after implementation.
- GA4, Search Console, GTM, and Bing Webmaster Tools
- Yandex Webmaster and conversion event coverage
- Ecommerce, form, call, and booking tracking
- Consent configuration and cross-domain tracking
- Language/country separation and referral exclusions
Website Migration Risk Review
For planned or recent migrations, I evaluate technical risk before development, on staging, before launch, immediately after launch, or during traffic-loss diagnosis.
- Old and new URL structures and redirect mapping
- Canonicals, internal links, sitemaps, and robots directives
- Hreflang, structured data, and analytics continuity
- Staging controls, content parity, and rendering
- Status codes, page speed, and indexation checks
Technical SEO Issue Prioritization
The final audit does not present all findings as equal. Issues are prioritized by impact, scale, urgency, effort, and confidence.
- Business impact, SEO impact, and affected URL volume
- Template-wide risk and crawl/indexation severity
- Conversion impact and implementation effort
- Development dependency, urgency, and confidence
- Critical, High, Medium, Low, and Monitor levels
- Confirmed problems vs risks, opportunities, and data gaps
Developer-Ready Recommendations
Each important technical issue is documented in a format that supports implementation—with evidence, expected behaviour, acceptance criteria, and validation methods.
- Problem description, evidence, and affected URLs/templates
- Expected vs current behaviour and recommended solution
- Example output, acceptance criteria, priority, and owner
- Validation method, dependencies, and risks
- Example HTML, schema, redirect rules, and metadata logic
- Hreflang maps, sitemap rules, and ticket-ready tasks
Implementation Support
I can implement agreed fixes directly where access and technology allow, or support developers with specs, tickets, code review, and staging validation.
- Direct website changes and developer consultation
- Ticket creation and technical specifications
- Code review, staging validation, and template review
- Prioritization meetings and content-team guidance
- Post-deployment testing within agreed scope
Post-Implementation Validation
A technical recommendation is not complete until the deployed fix has been checked—and confirmed not to introduce new problems.
- Status codes, canonicals, robots, and internal links
- Rendering, metadata, structured data, and hreflang
- XML sitemaps, mobile output, performance, and analytics
- Indexability and redirect behaviour
- Template coverage and further-change requirements
Monitoring and Technical SEO Roadmap
After the audit and implementation, I create a framework for ongoing monitoring and the next technical improvements.
- Indexation checks, crawl reports, and error monitoring
- Search Console, Core Web Vitals, and sitemap validation
- Structured-data errors, redirect chains, and broken links
- Page-template checks and organic landing-page changes
- Immediate, short-term, development, and long-term actions
Search terminology
Technical SEO Audit, Website Audit and SEO Strategy: What Is the Difference?
Website audit
May include technical SEO, content, design, user experience, accessibility, analytics, security, branding, and conversion performance.
On-page SEO audit
Reviews individual pages, including intent, content, metadata, headings, entities, internal links, and conversion elements.
SEO strategy
Defines how technical SEO, content, authority, measurement, and implementation work together to achieve business goals. A technical audit is often one part of a broader SEO strategy.
Ideal clients
Who This Technical SEO Audit Is For
Websites losing organic traffic
Businesses experiencing ranking, traffic, indexation, or conversion declines without a clear explanation.
New websites preparing for launch
Companies that need technical validation before search engines discover the website.
Websites planning a redesign or migration
Businesses changing domains, platforms, URLs, architecture, languages, or page templates.
Ecommerce and marketplace websites
Platforms with products, categories, filters, pagination, inventory changes, and large URL inventories.
SaaS and technology companies
Businesses using modern JavaScript frameworks, dynamic routes, integrations, documentation, and application-based content.
Publishers and content platforms
Websites with large archives, pagination, tags, categories, authors, duplicate content, and frequent publishing.
Programmatic SEO websites
Platforms generating large numbers of pages from templates, data, locations, entities, or keyword combinations.
Multilingual and international websites
Businesses managing hreflang, country versions, language folders, regional domains, and translated content.
Local and multi-location businesses
Companies managing service areas, city pages, branch pages, and local landing-page structures.
Websites with development teams
Businesses that need clear, prioritized, and developer-ready technical SEO documentation.
What you receive
Technical SEO Audit Deliverables
Concrete findings, prioritized actions, implementation guidance, and technical validation—scoped to your website and business priorities.
- Technical SEO audit
- Website crawl analysis
- Indexation review
- Search Console technical analysis
- Robots.txt review
- Meta robots review
- XML sitemap audit
- HTTP status code analysis
- Redirect-chain and loop analysis
- Canonicalization audit
- Duplicate URL analysis
- Website architecture review
- Internal-linking audit
- JavaScript rendering review
- Server-rendering review
- Page-template analysis
- Core Web Vitals review
- Mobile SEO review
- Structured-data audit
- Hreflang audit
- Pagination review
- Faceted-navigation review
- Programmatic SEO technical review
- Ecommerce technical review where relevant
- Local SEO technical review where relevant
- Image SEO review
- Video SEO review where relevant
- HTTPS and protocol review
- Server-response review
- Log file analysis where available
- Analytics and tracking review
- Migration risk analysis where relevant
- Prioritized technical issue list
- Developer-ready recommendations
- Ticket-ready implementation tasks
- Technical acceptance criteria
- Direct implementation support where agreed
- Staging-environment validation
- Post-deployment quality assurance
- Technical SEO monitoring roadmap
Delivery process
How I Deliver a Technical SEO Audit
Discovery and Scope Definition
I review your website, business priorities, target markets, technical stack, recent changes, existing data, and known concerns.
Data Collection and Crawling
I collect information from website crawls, search platforms, analytics, sitemaps, page source, rendered output, and available server or backlink data.
Technical Analysis
I evaluate crawlability, indexation, architecture, rendering, status codes, canonicals, performance, structured data, internal links, and template behaviour.
Issue Prioritization
Findings are prioritized according to SEO impact, business value, urgency, scale, implementation effort, and confidence.
Audit Documentation
I prepare a clear report with evidence, affected URLs, recommendations, implementation requirements, and validation criteria.
Implementation Support
I implement agreed fixes directly or work with your developers, designers, writers, analysts, and internal teams.
Quality Assurance
After implementation, I test the deployed changes and confirm whether they produce the intended technical output.
Monitoring and Next Actions
I review available search and analytics data, document remaining risks, and create a roadmap for the next technical improvements.
Specialist
Why Work With Me for a Technical SEO Audit?
I combine technical SEO with web development, JavaScript SEO, content architecture, structured data, AEO, GEO, multilingual SEO, analytics, and implementation support.
This allows me to evaluate both search-engine requirements and the technical systems developers work with.
I review: How search engines discover pages How servers respond How JavaScript renders content Which URLs are indexed How canonical and redirect signals interact How templates generate metadata How internal links distribute authority How structured data represents entities How mobile users experience the website How technical fixes can be implemented and measured
Rather than delivering an automated crawl export, I document: Which issues genuinely affect performance Which URLs and templates are affected Why each issue matters Which action should be prioritized How developers should implement it What output should be expected How the fix will be tested Who should own the task What should be monitored after deployment
I can support the complete process from technical discovery and diagnosis through implementation, staging validation, deployment, and post-fix monitoring.
Common questions
Frequently asked questions
A technical SEO audit can include crawlability, indexation, rendering, canonicals, redirects, sitemaps, robots directives, internal links, website architecture, structured data, mobile usability, Core Web Vitals, and server responses. The exact scope depends on the website’s size, technology, and business priorities.
An automated scan identifies patterns and technical warnings. A professional audit evaluates whether those findings affect important pages, search performance, user journeys, or business outcomes. It also defines the appropriate fix, priority, owner, and validation method.
A technical audit can identify and help remove problems that limit crawling, indexation, rendering, performance, and page understanding. However, rankings also depend on relevance, content, authority, competition, and demand.
The timeframe depends on website size, number of templates, technical complexity, available data, rendering method, languages, ecommerce or marketplace features, migration history, and required documentation. A small service website requires a different scope from a marketplace with millions of URLs.
Search Console access is highly useful because it provides indexation, query, sitemap, Core Web Vitals, and search-performance data. An audit can still begin without access, but some conclusions may be less complete.
Yes. I review raw HTML, rendered output, routing, metadata, status codes, internal links, structured data, dynamic content, and indexation behaviour for JavaScript-based websites.
Yes. I can review Next.js routing, metadata, server rendering, static generation, revalidation, middleware, canonical tags, sitemaps, structured data, redirects, and deployment output.
Yes. The audit may include themes, plugins, page builders, archives, categories, tags, pagination, canonicals, sitemaps, structured data, performance, and duplicate URLs.
Yes. I can review product pages, categories, filters, sorting, pagination, product variations, unavailable items, structured data, internal search, and inventory-related URL behaviour.
Yes. I can implement agreed fixes directly where access and technology allow. I can also provide detailed developer-ready recommendations, ticket descriptions, examples, and acceptance criteria.
Yes. I review performance data and page templates to identify issues affecting loading, responsiveness, and visual stability. Recommendations are prioritized according to real user and template impact.
Yes. I review structured-data validity, accuracy, page-template implementation, entity relationships, visible-content consistency, and supported schema types.
A technical SEO audit does not normally include complete keyword research. However, I review priority queries, landing pages, page targeting, and architecture where they are necessary to understand a technical issue. Full keyword mapping can be added as a separate service.
The primary focus is technical SEO. Backlink data may be used to identify high-value URLs, migration risks, broken destinations, and redirect priorities. A complete backlink strategy is normally a separate scope.
I evaluate the website through crawls, templates, data samples, and priority URLs. For larger websites, it is not necessary to manually review every page when many URLs share the same template. Critical and representative pages receive deeper manual validation.
After delivery, the next stage may include developer implementation, direct technical fixes, staging validation, deployment checks, Search Console monitoring, follow-up crawling, performance measurement, and a long-term technical roadmap.
The initial process normally requires your website, priority products or services, target markets, main competitors, CMS or technical stack, known technical concerns, recent migration or redesign information, Google Search Console and analytics access where available, sitemap and robots information, staging access where relevant, server logs where log analysis is included, and a development-team contact or workflow where implementation support is required.
Discuss Your Technical SEO Audit
- 20 min intro
- No obligation
- You keep your data