JavaScript and Next.jsSEO
Modern frameworks can be wonderful for visitors and awkward for crawlers. We build and fix Next.js sites so search engines see exactly what users see.
JavaScript and Next.js SEO: what the work involves
Single-page applications often ship an almost empty HTML shell and rely on scripts to produce content. Google can render JavaScript, but rendering is queued, resource-limited and fragile when scripts fail, so important titles, links and copy may be seen late or not at all. Teams only notice when a redesigned React site loses visibility that the old server-rendered one held.
Next.js gives real tools for this problem, and we use them every day on our own projects. We audit raw HTML versus rendered DOM, choose between static generation, server rendering and incremental regeneration per route, configure the Metadata API, canonical logic, sitemaps and robots, and make sure internal links are genuine anchor elements. Findings arrive as pull-request ready changes, tested on staging before release.
Core features
Raw versus rendered comparison
We fetch source HTML and the rendered page side by side to find content, links or tags that exist only after scripts run.
Rendering strategy per route
Static, server-rendered or incrementally regenerated pages chosen by how often content changes and how critical it is for search.
Metadata and canonical implementation
Titles, descriptions, canonical URLs and Open Graph data generated by the Metadata API from one trustworthy source.
Sitemaps and robots in code
Dynamic sitemap and robots routes that list only live, canonical URLs and update as content changes.
Link and navigation audit
Confirmation that navigation uses crawlable anchors with real href values rather than click handlers or hash fragments.
Performance on the client
Bundle analysis, image optimisation and hydration costs reviewed against field Core Web Vitals.
What we get right before launch
Client-side rendering is a gamble
Content injected after load can be indexed, but it depends on scripts executing cleanly. For pages that must rank, we prefer HTML delivered in the first response.
Soft 404s on dynamic routes
A missing record that still returns a 200 status teaches Google to index empty pages. Not-found states must return proper 404 status codes.
Blocked assets break rendering
If robots rules block scripts or APIs that the page needs, Googlebot sees a broken layout. We test with the URL Inspection live tool before and after releases.
Tools and technology
- Next.js
- React
- Google Search Console
- Chrome DevTools
- Screaming Frog
- Lighthouse
- PageSpeed Insights
- Schema.org validator
- Vercel
Common questions, answered
Can Google index a React single-page app?
Often yes, since Google renders JavaScript, but it adds delay and risk. Server rendering or static generation puts content in the initial HTML, which is more reliable and also helps other search engines and social previews.
Is Next.js better for SEO than plain React?
It provides built-in server rendering, static generation and a metadata system, which remove common obstacles. A badly configured Next.js site can still have problems, so the framework helps but does not replace careful implementation.
Can you fix SEO on a site you did not build?
Yes. We review the repository or the deployed output, document issues with evidence and either submit changes or give your developers precise tickets. Access to staging makes verification much faster.
Do you also build the site?
We do. As a Next.js development team we can deliver SEO-ready builds from the start, or limit our involvement to auditing and advising while your own engineers keep ownership of the code.
More SEO services
All SEO servicesJavaScript Rendering Audit
If key content only exists after scripts run, search engines may see an empty shell. We compare what users get with what crawlers receive and close the gap.
Headless CMS SEO
A headless CMS removes the plugins that quietly handled SEO. We rebuild those responsibilities in your content model and your front end.
Technical SEO Services
Great content cannot rank if search engines cannot reach it. We find the crawl, index and rendering faults holding your site back and fix them in the codebase.
Ready to start your JavaScript and Next.js SEO project?
Tell us what you need and we will come back with a clear scope, timeline and the questions worth answering before any build starts.