Technical Diagnostic
A focused review of affected routes, templates, deployment behaviour, crawl signals, CMS behaviour, performance bottlenecks, or code paths, followed by a prioritised fix plan the team can take into delivery.
Technical SEO Recovery and Debugging for JavaScript Websites
When search performance falls after something changed in the platform, the likely cause is often technical rather than editorial.
Recover traffic, rankings, crawlability, and indexation after a release, redesign, or migration changes the technical signals search engines rely on.
Short Answer
When search visibility drops after a release or migration, treating the loss as one vague SEO problem usually slows recovery down. Ranking, rendering, crawlability, indexation, metadata, structured data, canonical signals, redirects, internal links, and templates need separating, so the pages that actually lost value can be fixed without adding more platform risk.
Why It Matters
When organic visibility has dropped, I help commercial teams separate ranking, rendering, crawl, indexing, redirect, and template faults so recovery effort is not spread across the wrong fixes.
Common Situations
- Traffic dropped after a redesign, migration, or deployment.
- Crawl discovery issues around sitemaps, robots rules, or rendered links.
- Redirect, canonical, or metadata mistakes that split or suppress important URLs.
Recovery work moves faster once ranking, rendering, crawling, redirect, and indexation failures are separated instead of treated as one general SEO drop.
What I Look at First
- I use the Traffic Drop Triage Checklist to compare rendered output, indexable HTML, metadata, canonicals, redirects, internal links, sitemap and robots signals, structured data, crawl behaviour, Search Console data, and recent releases.
- For migration or redesign recovery, the Website Replatforming Risk Register helps separate launch‑risk gaps from symptoms that appeared after release.
- The recovery process starts by proving which technical signal actually regressed first, then sequencing fixes so recovery can ship without introducing a second wave of crawlability or indexation issues.
What Usually Changes
- Lost or damaged URLs are mapped against route, template, redirect, canonical, and rendered HTML changes.
- Crawl, rendering, indexing, metadata, and ranking signals are separated before recovery work starts.
- Search‑critical templates and internal links are checked against what users and crawlers can actually reach.
- Recovery actions are prioritised by commercial exposure and fix confidence.
- The team knows what to ship, what to monitor, and what evidence to re‑check.
How This Usually Works
Recovery Sprint
A short, concentrated engagement for a defined technical SEO, performance, CMS, Vercel, migration, or production issue where the business needs the cause isolated and the first fixes moved quickly.
Embedded Delivery Support
Senior hands‑on support inside an existing team where architecture, implementation, review, and delivery judgement all matter, especially when the work cannot be handed over as isolated tickets.
This May Not Be the Right Fit If
- You only need generic SEO content writing, a broad audit deck, or reporting that stops before engineering remediation. If the issue is a live traffic loss after a launch, Traffic Drop After a Redesign or Replatform may be the better starting point.
- The problem is not tied to rendered output, redirects, canonicals, crawl signals, or route behaviour that can actually be fixed. If the core issue is JavaScript rendering or indexing, JavaScript SEO Rendering and Indexing Fix is the more focused service.
Related Case Studies and Project Work
More Specific Service Pages
Traffic Drop After a Redesign or Replatform
Recover organic traffic after a redesign or replatform by isolating what changed in URLs, templates, rendering, metadata, or crawl signals before the drop compounds.
WordPress to Next.js SEO Recovery
Recover lost visibility after a WordPress‑to‑Next.js migration by tracing technical gaps in redirects, canonicals, sitemaps, rendering, and route continuity for priority pages.
JavaScript SEO Rendering and Indexing Fix
Diagnose why Google is not indexing important JavaScript pages before incomplete HTML, unstable metadata, or routing changes keep them out of search.
Next.js Sitemap, Robots and Crawlability Debugging
Fix sitemap, robots, and crawl‑discovery failures before important Next.js pages stay hidden, blocked, stale, or hard for search engines to trust.
Next.js Redirects and URL Normalisation Fix
Fix duplicate URLs, bad redirects, and canonical mistakes before search engines and users keep landing on conflicting versions of the same page.
Related Services
Technical SEO for JavaScript Applications
Engineering‑led SEO work for JavaScript sites where rendering, crawlability, metadata, or migration changes are keeping important pages out of search.
Performance Optimisation and Core Web Vitals
Performance work for modern front ends where page loads feel slow, Core Web Vitals are slipping, or scripting cost is hurting key user journeys.
Headless Architecture Consulting
Headless CMS architecture advice for decisions around preview trust, SEO controls, revalidation, and editorial workflow before they become operational pain.
Next.js Platform Consulting
Senior Next.js architecture work for legacy platforms, difficult migrations, and live stacks that need clearer delivery direction before more work piles on.
Related Technical Articles
Why JavaScript Pages are Crawled but Not Indexed. Why JavaScript Pages are Crawled but Not Indexed
Why JavaScript pages get crawled but not indexed, covering rendered content, metadata, canonicals, links, noindex rules, quality, and crawl signals.
Checking Rendered HTML for JavaScript Pages. Checking Rendered HTML for JavaScript Pages
Check rendered HTML for JavaScript pages by comparing source and DOM output across metadata, headings, links, schema, content, hydration, and crawlability.
How View Source Stopped Being Enough. How View Source Stopped Being Enough
Why view source stopped being enough for modern web checks, and how rendered HTML, hydration, metadata, schema, crawl paths, and client output changed audits.
Client‑Side Rendering and Search Visibility. Client‑Side Rendering and Search Visibility
How client‑side rendering can affect search visibility, and what to check around content, links, metadata, routing, loading states, and fallbacks.
JavaScript Rendering and SEO Checks. JavaScript Rendering and SEO Checks
JavaScript rendering and SEO checks for pages that rely on client‑side behaviour, including content, links, metadata, fallbacks, and rendered output.
Next.js Sitemap, Robots and Crawlability Debugging Checklist. Next.js Sitemap, Robots and Crawlability Debugging Checklist
A Next.js crawlability checklist for debugging sitemaps, robots.txt, canonicals, route generation, redirects, staging leaks, missing pages, and indexation.