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
Crawl
Can a bot reach the URL at all? Robots rules, status codes, server errors, crawl budget waste.
- 2
Render
Does the content exist after rendering? JavaScript-dependent copy and links are the usual casualties.
- 3
Index
Is it eligible and selected? Noindex, canonical conflicts, soft 404s, duplication.
- 4
Understand
Structured data and internal links telling the engine what the page is and how it relates to the rest.
- 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
Establish what is actually indexed
Search Console coverage first, not a third-party crawler. Tools estimate; Search Console reports what Google did.
- 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
Specify fixes, do not describe them
Each item written precisely enough for a developer to implement without interpreting intent — file, rule, expected result.
- 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
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
| Phase | Duration | What you get |
|---|---|---|
| Audit | 1–2 weeks | Prioritised findings with evidence and specified fixes. |
| Critical fixes | 1–2 weeks | Indexation and canonical blockers resolved and verified. |
| Structural work | 2–6 weeks | Architecture, structured data and internal linking implemented. |
| Performance | 2–4 weeks | Core Web Vitals addressed against field data. |
| Monitoring | Ongoing | Regression 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
| Area | What we actually change |
|---|---|
| Robots & crawl | robots.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. |
| Rendering | Server-rendered vs client-only content, hydration-dependent links, lazy-loaded copy, and verification that structured data survives rendering. |
| Status codes | Soft 404s returning 200, redirect chains and loops, 302s that should be 301s, and 5xx errors appearing only under crawler load. |
| Canonicalisation | Trailing slash consistency, protocol and host normalisation, parameter and session URLs, cross-domain canonicals, and canonical-versus-sitemap disagreement. |
| Sitemaps | Accurate 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 data | JSON-LD graph consistency, stable @id references, markup matching visible content, and avoidance of review markup without genuine reviews. |
| Core Web Vitals | LCP element and its resource chain, render-blocking CSS and fonts, CLS from unsized media and injected banners, INP from long main-thread tasks. |
| Internationalisation | hreflang 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 true | Then do this |
|---|---|
| Pages are missing from Search Console coverage | Technical. Indexation triage is the entire job. |
| Pages are indexed but rank for nothing | Not technical. This is relevance and authority — content and links. |
| Rankings dropped immediately after a release or migration | Technical. Start with the redirect map and status codes. |
| Rankings declined gradually over months | Rarely technical. Usually competitive displacement or content decay. |
| Google shows a different title or content than you wrote | Technical. Rendering or duplicate-content selection. |
| Traffic is healthy but conversion is poor | Not SEO at all. Landing page and offer. |
KPIs we hold ourselves to
| Metric | How it is defined | What good looks like |
|---|---|---|
| Indexed page ratio | Indexed URLs divided by intentionally submitted URLs in Search Console. | Above 90% |
| Crawl budget efficiency | Share of crawl requests hitting indexable, canonical URLs rather than parameters and duplicates. | Majority on canonical URLs |
| Core Web Vitals pass rate | Percentage of real-user page views meeting all three thresholds, from field data. | Above 75% of URLs |
| Redirect chain count | Internal links resolving through more than one hop. | Zero |
| Structured data error count | Items 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.
E-commerce
- Challenge
- Faceted navigation consuming crawl budget and duplicating category pages.
- Approach
- Parameter handling, canonical strategy and a category hierarchy rebuilt around demand.
B2B SaaS
- Challenge
- Documentation rendered client-side and largely unindexed.
- Approach
- Server-rendering the content and link graph, then coverage triage.
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
What SEO actually costs, and why
What genuinely drives the price of SEO work, the three engagement models you will be offered, and the situations where buying SEO is the wrong decision.
Read the guideTechnical SEO checklist for Next.js sites
A checklist of the Next.js-specific technical SEO failures that actually cost rankings: metadata merging, trailing slashes, export mode and canonical drift.
Read the guideSEO audit: what to check, in what order
A technical SEO audit ordered by dependency rather than importance, so each check is only worth running once the one before it has actually passed.
Read the guideHow long SEO takes to work
Why the honest answer is a range rather than a number, what separates a six-month result from an eighteen-month one, and how to tell it is working.
Read the guideRelated services
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Read moreQuestions? 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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