Guides
Technical SEO for JavaScript Sites: Rendering, Links, and Metadata
A practical DomainLens guide to Technical SEO for JavaScript Sites: Rendering, Links, and Metadata, focused on server rendering, hydration, crawlable links, metadata delivery.
Run a fresh DomainLens audit and use the report as your priority list.
Overview
Technical SEO for JavaScript Sites: Rendering, Links, and Metadata is useful when you need a clear way to separate cosmetic SEO work from issues that can block crawling, indexing, rankings, or search snippets. Start with evidence, then decide what deserves engineering time.
Use an automated audit to collect the baseline, then review the page manually for context, search intent, and business priority.
Why it matters
The most common problems usually sit around server rendering, hydration, crawlable links, metadata delivery. These signals influence how easily search engines discover pages, understand content, and trust the final URL they should rank.
A good SEO workflow turns these checks into a short fix list with owner, impact, effort, and validation steps.
What to check
- Review server rendering and record the current state, expected state, and exact URL affected.
- Review hydration and record the current state, expected state, and exact URL affected.
- Review crawlable links and record the current state, expected state, and exact URL affected.
- Review metadata delivery and record the current state, expected state, and exact URL affected.
Common mistakes
- Fixing server rendering without validating the rendered page, canonical target, and indexability after deployment.
- Fixing hydration without validating the rendered page, canonical target, and indexability after deployment.
- Fixing crawlable links without validating the rendered page, canonical target, and indexability after deployment.
- Fixing metadata delivery without validating the rendered page, canonical target, and indexability after deployment.
Next step
Run a fresh DomainLens audit, compare the report with this guide, and prioritize fixes that affect indexability, snippets, internal linking, or Core Web Vitals first.