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Field notes / practical guide

JavaScript rendering and SEO

JavaScript is compatible with search, but the way a page is delivered affects how quickly users and crawlers can access its content.

Inspect the initial response

Compare the HTML returned by the server with the page visible after scripts run. Check whether the main content, title, canonical and important links are already present. An empty app container is different from a complete pre-rendered page.

Put it in context

Crawl findings and technical priorities

Inspect crawl status, indexability and page-level findings before prioritising fixes.

DataScreaming Frog SEO Spider · AI-generated illustration

Choose rendering for the content

Stable service pages are good candidates for pre-rendering. More dynamic interfaces may need server rendering or client-side interaction. React can generate static HTML too; the framework name alone does not determine speed or SEO quality.

Validate both experiences

Test navigation and content with and without successful script execution. Check the final rendered page and relevant Search Console reports after launch. Rendering choices reduce certain dependencies, but do not guarantee indexing or search rankings.

Put the guidance to work

Capture your starting point, assign an owner to the next action, and decide what evidence will confirm that it worked.

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