Services

Technical SEO Recovery and Debugging for JavaScript Websites

Start here when search performance fell after something changed in the platform and the likely cause is technical rather than editorial.

Choose the right technical SEO recovery path when rankings, crawlability, or indexation dropped after a release or migration.

Common situations

  • Traffic drops or indexing changes after a migration or deployment.
  • Crawl discovery issues around sitemaps, robots rules, or rendered links.
  • Redirect and canonical mistakes that split or suppress the wrong URLs.

Choose the symptom that best matches the current recovery problem.

Choose the closest scenario

  1. Scenario

    Traffic Drop After a Redesign or Replatform

    Use redesign recovery and technical SEO recovery work to isolate what changed in URLs, templates, rendering, or crawl signals before the organic traffic drop compounds.

  2. Scenario

    WordPress to Next.js SEO Recovery

    Recover lost visibility after a WordPress‑to‑Next.js migration by tracing the technical gaps in redirects, canonicals, sitemaps, and rendering.

Related consulting support

  1. Capability

    Technical SEO for JavaScript Applications

    Bring in engineering‑led SEO help when Google is not indexing important JavaScript pages because rendering, crawlability, metadata, or migration changes are getting in the way.

  2. Capability

    Next.js Platform Consulting

    Bring in senior Next.js architecture support when a legacy platform, older front end, or hard‑to‑maintain site needs migration planning, platform rescue, and clearer delivery direction.

  4. Capability

    Headless Architecture Consulting

    Bring in headless CMS consulting when CMS architecture, SEO controls, preview trust, or revalidation decisions are about to lock in operational pain.

Related project experience

  1. Nando’s

    Senior software engineer on the UK and Ireland replatform, migrating Nando’s customer‑facing websites from legacy Drupal to a unified headless platform built with Next.js and Storyblok, with a focus on performance, accessibility, and SEO.

    Screenshot of the Nando’s website; part of John Kavanagh's development portfolio.

  2. John Lewis
    & Partners

    Senior developer as part of team 'Findability'. Led the digital implementation of the 'John Lewis & Partners' rebrand alongside new feature development, user journey optimisation, and performance improvements.

    Screenshot of the John Lewis website; part of John Kavanagh's development portfolio.

Related technical articles

Tell me what needs fixing

Send me the affected page or route, point me at the code if that helps, and tell me what you expected to happen versus what is happening now. If this connects to a Next.js migration, technical SEO drop, performance issue, launch, or platform move, include that context too. I'll come back with the clearest next step.

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