What Does a Technical SEO Service Include?
Technical SEO services address 8 core areas that collectively form your website's search infrastructure:
Site Speed and Core Web Vitals
Page speed directly impacts rankings and user experience. Google's Core Web Vitals measure three critical performance metrics:
Largest Contentful Paint (LCP) measures how quickly the main content loads. Target: under 2.5 seconds. Common issues include unoptimised images, render-blocking JavaScript, slow server response times, and excessive third-party scripts.
Interaction to Next Paint (INP) measures responsiveness to user interactions. Target: under 200 milliseconds. Heavy JavaScript frameworks, long tasks blocking the main thread, and inefficient event handlers cause poor INP scores.
Cumulative Layout Shift (CLS) measures visual stability during page load. Target: under 0.1. Images without dimensions, dynamically injected content, and late-loading fonts cause layout shifts that frustrate users and hurt rankings.
Technical SEO services diagnose the specific causes of poor Core Web Vitals on your site and provide developer-ready specifications for resolving them.
Crawlability and Crawl Budget Optimisation
Crawl budget determines how many pages Google crawls on your site within a given period. Wasting crawl budget on low-value pages means important content gets crawled less frequently:
Robots.txt configuration controls which areas of your site search engines can access. Misconfigured rules can accidentally block important content or waste crawl budget on pages that should be excluded.
XML sitemap accuracy ensures your sitemap contains only indexable, canonical URLs. Sitemaps listing redirected, noindexed, or non-canonical URLs send conflicting signals and waste crawl budget.
Internal link architecture determines how crawlers navigate your site. Orphan pages with no internal links may never get discovered, whilst excessive links to low-value pages dilute crawl priority for important content.
URL parameter handling prevents search engines from crawling infinite variations of the same page through filter, sort, or session parameters.
Indexation Management
Indexation issues prevent your pages from appearing in search results even after Google has crawled them:
Index coverage analysis using Google Search Console identifies pages excluded from the index and the specific reasons for exclusion. Common issues include crawl anomalies, soft 404s, duplicate content detection, and server errors.
Canonical implementation ensures Google indexes the correct version of each page when duplicate or near-duplicate content exists. Incorrect canonicals can cause Google to index the wrong page or ignore your content entirely.
Meta robots directives control indexation at page level. Accidental noindex tags on important pages is one of the most common and damaging technical SEO mistakes businesses make.
Pagination handling prevents duplicate content issues across paginated listings whilst ensuring all products or articles remain accessible to crawlers.
Structured Data and Schema Markup
Structured data helps search engines understand your content precisely and can unlock rich results that improve click-through rates:
Organisation schema communicates your business identity, contact information, and social profiles to search engines, strengthening your entity presence in Google's Knowledge Graph.
Product and service schema enables rich snippets showing prices, availability, and ratings directly in search results, significantly improving click-through rates.
FAQ schema displays frequently asked questions directly in search results, increasing your listing's visual prominence and capturing additional click-through traffic.
Breadcrumb schema improves how your site hierarchy appears in search results, providing users with context about where a page sits within your site structure.
Schema implementation connects to the broader concept of entity SEO, helping search engines understand the entities and relationships within your content.
JavaScript SEO
Modern websites increasingly rely on JavaScript frameworks that can create significant crawling and indexation challenges:
Server-side rendering (SSR) ensures search engines receive fully rendered HTML rather than relying on JavaScript execution. Client-side rendered content may not be indexed correctly or may face significant indexation delays.
Dynamic rendering provides pre-rendered pages to search engine crawlers whilst serving JavaScript-powered experiences to users, solving crawlability issues without changing the user experience.
JavaScript resource accessibility ensures critical scripts are not blocked by robots.txt and that they load efficiently enough for Google's rendering service to process them within its resource limits.
Mobile Optimisation
Google uses mobile-first indexing, meaning the mobile version of your site is what gets crawled and ranked:
Responsive design implementation ensures your site adapts correctly across device sizes without content being hidden, overlapping, or unusable on mobile screens.
Touch target sizing ensures buttons and links are large enough and spaced adequately for mobile users to tap accurately without frustration.
Viewport configuration ensures pages render correctly on mobile devices rather than displaying desktop layouts that require pinch-zooming.
Mobile page speed addresses mobile-specific performance issues including excessive resource loading on cellular connections and render-blocking resources that delay mobile rendering.
HTTPS and Security
Site security influences rankings and user trust:
HTTPS implementation is a confirmed ranking factor. Mixed content warnings, insecure resource loading, and certificate issues undermine both rankings and user trust.
Security headers including Content Security Policy, X-Frame-Options, and Strict-Transport-Security protect users and signal technical competence to search engines.
Malware and spam detection identifies compromised pages or injected content that could trigger manual actions from Google, devastating your organic visibility.
Log File Analysis
Server log analysis reveals how search engine crawlers actually interact with your site, providing insights no other tool can deliver:
Crawl frequency analysis shows which pages Google crawls most and least frequently, revealing crawl budget allocation that may not align with your priorities.
Status code monitoring identifies server errors, redirects, and access issues that prevent effective crawling of important pages.
Bot behaviour patterns reveal how Googlebot navigates your site architecture, exposing structural issues that force crawlers into inefficient paths.