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Technical SEO

Technical SEO Services: Remove the Reasons You Cannot Rank

Technical SEO does not create demand. It removes the reasons a search engine cannot crawl, render or index pages you have already paid to produce. Vedixx audits those failures, ranks them by traffic at risk, and specifies each fix precisely enough for your developers to implement without further interpretation.

What is technical SEO?

Technical SEO is the work that makes a website crawlable, renderable and indexable by search engines. It covers robots directives, JavaScript rendering, HTTP status codes, canonicalisation, XML sitemaps, structured data, internal link architecture and Core Web Vitals. It does not generate demand — it removes the obstacles preventing existing pages from ranking.

What's included

Crawl & render audit

Robots directives, JavaScript render verification, crawl budget lost to parameter and faceted URLs, and whether AI crawlers such as GPTBot are blocked at the CDN or WAF without anyone realising.

Indexation triage

Search Console coverage worked page by page: noindex and canonical conflicts, soft 404s, and thin or duplicate pages consuming crawl budget while earning nothing.

Canonicalisation

One reachable URL per page. Consistent trailing slashes, protocol and host, www resolution, parameter handling, and self-referencing canonicals that match the sitemap exactly.

Structured data

A connected JSON-LD graph using stable identifiers rather than repeated inline objects, so Organization, Service, Article and Breadcrumb entities resolve as one graph instead of many.

Core Web Vitals

LCP element identification, render-blocking resource removal, layout-shift sources and INP from long tasks — measured in field data, not lab scores.

Migration protection

Pre-migration URL inventory, one-to-one redirect mapping and post-launch verification. The single highest-risk moment in any site’s SEO life.

The order failures have to be fixed in

Each step is a gate. A page that cannot be crawled will never be rendered; one that is not indexed cannot rank however fast it loads. Working out of order is why technical SEO budgets disappear without visible result.

  1. 1

    Crawl

    Can a bot reach the URL at all? Robots rules, status codes, server errors, crawl budget waste.

  2. 2

    Render

    Does the content exist after rendering? JavaScript-dependent copy and links are the usual casualties.

  3. 3

    Index

    Is it eligible and selected? Noindex, canonical conflicts, soft 404s, duplication.

  4. 4

    Understand

    Structured data and internal links telling the engine what the page is and how it relates to the rest.

  5. 5

    Experience

    Core Web Vitals and mobile usability — the last gate, and the one most often attacked first.

Where it pays for itself

Published but never indexed

The problem
Months of content has gone live and Search Console shows a large gap between submitted and indexed URLs. The assumption is that more content is needed.
What we build
Coverage triage to find why pages are excluded — usually canonical conflicts, thin duplicates or crawl budget consumed by parameter URLs — then fixing the cause rather than adding more pages.
The result
Existing content becomes eligible to rank without commissioning a single new article.

Traffic lost after a migration

The problem
A replatform or redesign went live and organic traffic dropped sharply, with no obvious cause and mounting pressure to explain it.
What we build
Comparison of pre- and post-migration URL inventories, redirect mapping audit, and recovery of orphaned or 404-ing pages that still hold external links.
The result
Accumulated authority reconnected to its new destination instead of being written off.

Content invisible to crawlers

The problem
Key copy and internal links only appear after JavaScript hydration, so the server-rendered HTML a crawler first sees is nearly empty.
What we build
Render testing to identify what is missing pre-hydration, then moving indexable content and links into the server-rendered response.
The result
Crawlers see the same page a user does, on the first pass rather than the second.

Crawl budget wasted on noise

The problem
Faceted navigation and tracking parameters generate thousands of near-duplicate URLs, and the pages that matter are crawled rarely.
What we build
Parameter handling, canonical strategy and robots rules that keep crawlers on pages worth indexing, verified against server logs where available.
The result
Crawl attention concentrated on commercially relevant pages.

How it works

  1. 1

    Establish what is actually indexed

    Search Console coverage first, not a third-party crawler. Tools estimate; Search Console reports what Google did.

  2. 2

    Rank findings by traffic at risk

    Not by tool severity score. A critical-flagged warning on a page nobody visits matters less than a quiet canonical conflict on a money page.

  3. 3

    Specify fixes, do not describe them

    Each item written precisely enough for a developer to implement without interpreting intent — file, rule, expected result.

  4. 4

    Implement or hand over

    We can build the fixes or work alongside your team. Either way we review the implementation and stay accountable for the outcome.

  5. 5

    Re-verify and monitor

    Confirm in Search Console that the fix changed what Google sees, then monitor for regression — technical debt returns with every release.

Typical timeline

PhaseDurationWhat you get
Audit1–2 weeksPrioritised findings with evidence and specified fixes.
Critical fixes1–2 weeksIndexation and canonical blockers resolved and verified.
Structural work2–6 weeksArchitecture, structured data and internal linking implemented.
Performance2–4 weeksCore Web Vitals addressed against field data.
MonitoringOngoingRegression alerting and quarterly re-audit.

Technologies we build on

Diagnostics

  • Google Search Console
  • Screaming Frog
  • Server log analysis
  • PageSpeed Insights & CrUX

Rendering

  • URL Inspection live test
  • Rendered vs raw HTML diffing
  • Mobile-friendly test
  • JavaScript render audits

Implementation

  • Next.js & React
  • JSON-LD structured data
  • Dynamic sitemaps
  • Edge and CDN configuration

Monitoring

  • Coverage alerting
  • CrUX tracking
  • Uptime & status-code checks
  • Structured data validation

Who this is for

E-commerce

Faceted navigation, parameter handling and crawl budget — where most large-site technical SEO is won.

SaaS

Client-rendered application and documentation content that crawlers never fully see.

Publishers

Large archives, pagination and crawl efficiency across tens of thousands of URLs.

Marketplaces

Programmatic page generation at scale without tipping into thin content.

Enterprise

Multiple teams shipping to one domain, where regressions arrive with every release.

Any site mid-migration

The highest-risk moment in a site’s SEO life, and the cheapest to protect in advance.

What drives the cost

Technical SEO is priced on site complexity rather than page count. If the audit finds your constraint is not technical, we will say so rather than selling you a fix for a problem you do not have.

Site size and platform

A 20-page site and a 200,000-URL marketplace share almost no technical work. Platform constraints matter as much as scale.

Rendering approach

Server-rendered sites are straightforward to diagnose. Client-rendered applications require render testing at every step.

Existing technical debt

Years of accumulated redirects, legacy URLs and conflicting canonicals take longer to untangle than to describe.

Implementation route

Whether we implement, your team implements to our specification, or both, changes scope substantially.

Log file access

Server logs give certainty about crawl behaviour that no tool can infer. Having them shortens the audit.

Migration involvement

Protecting a migration in advance costs a fraction of recovering from one afterwards.

Technical audit

A prioritised, specified findings document. Yours to implement with anyone.

Audit and implementation

We fix what we find, verify in Search Console, and hand over documentation.

Retained technical SEO

Continuous monitoring and release review for teams shipping frequently.

Technical implementation

AreaWhat we actually change
Robots & crawlrobots.txt directives, meta robots and X-Robots-Tag conflicts, crawl-delay handling, and explicit decisions on AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended) rather than accidental blocking at the edge.
RenderingServer-rendered vs client-only content, hydration-dependent links, lazy-loaded copy, and verification that structured data survives rendering.
Status codesSoft 404s returning 200, redirect chains and loops, 302s that should be 301s, and 5xx errors appearing only under crawler load.
CanonicalisationTrailing slash consistency, protocol and host normalisation, parameter and session URLs, cross-domain canonicals, and canonical-versus-sitemap disagreement.
SitemapsAccurate lastmod from content dates rather than filesystem timestamps, which reset on every deployment and cause Google to discount the signal entirely. Sitemap index splitting beyond 50,000 URLs.
Structured dataJSON-LD graph consistency, stable @id references, markup matching visible content, and avoidance of review markup without genuine reviews.
Core Web VitalsLCP element and its resource chain, render-blocking CSS and fonts, CLS from unsized media and injected banners, INP from long main-thread tasks.
Internationalisationhreflang reciprocity and self-reference where multiple locales exist — and deliberately omitting hreflang where they do not.

Common mistakes

Fixing Core Web Vitals before indexation

Performance is visible, measurable and satisfying to improve. Indexation is none of those things, which is why it gets skipped. A fast page that is not indexed earns nothing.

Do this instead: Confirm coverage in Search Console first. Performance work comes after the page is eligible to rank.

Trusting a crawler over Search Console

Third-party crawlers simulate; they do not tell you what Google actually did. A site can crawl perfectly in a tool and still be substantially unindexed.

Do this instead: Use crawlers to find candidates, Search Console to confirm reality.

Blocking crawlers at the CDN by accident

Bot protection and WAF rules routinely challenge or block clients that do not look like browsers. Search and AI crawlers can be caught by rules nobody in the SEO team knows exist.

Do this instead: Verify with Search Console URL Inspection live test, and check AI crawler access deliberately rather than assuming.

Migrating without a URL inventory

Redirects written from memory miss the long tail — old campaign URLs, deprecated pages that still hold links. Damage surfaces weeks later when recovery is hardest.

Do this instead: Export every indexed URL before migration, map each to a destination, verify status codes after launch.

Deriving sitemap lastmod from file timestamps

Version control does not preserve modification times, so a fresh checkout gives every page the same date. Google detects unreliable lastmod and stops trusting it.

Do this instead: Use the content’s own updated date, or the commit date for that file.

Decision framework: is this actually a technical problem?

Technical SEO is frequently blamed for problems it cannot solve, and overlooked for ones it can. This is the sequence we apply before quoting any work — and you can apply it yourself.

If this is trueThen do this
Pages are missing from Search Console coverageTechnical. Indexation triage is the entire job.
Pages are indexed but rank for nothingNot technical. This is relevance and authority — content and links.
Rankings dropped immediately after a release or migrationTechnical. Start with the redirect map and status codes.
Rankings declined gradually over monthsRarely technical. Usually competitive displacement or content decay.
Google shows a different title or content than you wroteTechnical. Rendering or duplicate-content selection.
Traffic is healthy but conversion is poorNot SEO at all. Landing page and offer.

KPIs we hold ourselves to

MetricHow it is definedWhat good looks like
Indexed page ratioIndexed URLs divided by intentionally submitted URLs in Search Console.Above 90%
Crawl budget efficiencyShare of crawl requests hitting indexable, canonical URLs rather than parameters and duplicates.Majority on canonical URLs
Core Web Vitals pass ratePercentage of real-user page views meeting all three thresholds, from field data.Above 75% of URLs
Redirect chain countInternal links resolving through more than one hop.Zero
Structured data error countItems with errors in the Search Console enhancement reports.Zero errors

How we report

Technical work is reported against what Google observed, not against a tool score. Every finding carries the evidence that produced it and the verification that closed it.

Audit delivery

Prioritised findings ranked by traffic at risk, each with evidence, a specified fix and the expected observable change.

Post-implementation

Search Console confirmation that the fix changed what Google sees — coverage movement, not just a green tick in a crawler.

Continuous

Indexation and Core Web Vitals monitoring with alerting, so a regression introduced by a release is caught in days.

What you receive

  • A prioritised audit ranked by traffic at risk, not tool severity
  • Each fix specified to implementation level, not described
  • A URL inventory and redirect map where a migration is involved
  • A structured data specification with stable identifiers
  • Search Console verification that each fix changed what Google sees
  • Monitoring and alerting so regressions surface within days

Case studies

Published only with client permission and verified numbers. These slots are reserved for engagements in progress and will carry real figures rather than illustrative ones.

Publication pending

E-commerce

Challenge
Faceted navigation consuming crawl budget and duplicating category pages.
Approach
Parameter handling, canonical strategy and a category hierarchy rebuilt around demand.
Publication pending

B2B SaaS

Challenge
Documentation rendered client-side and largely unindexed.
Approach
Server-rendering the content and link graph, then coverage triage.
Publication pending

Publisher

Challenge
Replatform followed by a sharp organic decline.
Approach
URL inventory comparison, redirect remapping and orphan recovery.

Tools and standards referenced

Google Search Console

The only authoritative record of how Google crawls, indexes and ranks a site. Third-party tools estimate; this reports.

Core Web Vitals

LCP, INP and CLS measured from real users in the Chrome UX Report rather than simulated in a lab.

Schema.org

The vocabulary behind JSON-LD structured data and the entity graph.

Robots Exclusion Protocol

Governs crawler access — including whether AI crawlers can read your content at all.

XML Sitemaps protocol

Defines sitemap structure and the lastmod signal Google discounts when it detects unreliability.

HTTP status codes

The contract between server and crawler. Soft 404s and 302-for-301 are among the most common and costly misuses.

What you end up with

  • Every intended page crawlable, indexed and canonical
  • Content and links visible in the server-rendered HTML
  • Redirect chains removed and status codes correct
  • Structured data resolving as one connected graph
  • Core Web Vitals measured and addressed on field data
  • Regressions caught in days rather than at the next audit

Key takeaways

  • Crawl, render, index, understand, experience — in that order. Working out of sequence wastes the budget.
  • Search Console is the authority on what Google did. Crawlers only tell you what is possible.
  • A fast page that is not indexed earns nothing. Fix indexation before performance.
  • Never migrate URLs without an inventory and a verified one-to-one redirect map.
  • Check that bot protection is not blocking search and AI crawlers — it is invisible until you look.

Further reading

Related services

FAQ

Questions? Answered.

Technical SEO is the work that makes a site crawlable, renderable and indexable. It covers robots directives, JavaScript rendering, status codes, canonicalisation, XML sitemaps, structured data, internal link architecture and Core Web Vitals. It does not create demand; it removes the reasons a search engine cannot or will not use pages you already have.

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