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SEO
The technical SEO checklist for modern JavaScript sites
Server rendering, clean metadata, fast LCP and a real internal-link graph. Most ranking problems on modern stacks are one of these four.
December 15, 2025 6 min read
Render where crawlers can see
Client-only rendering still costs you. Server-render or pre-render every page that matters commercially, and verify by fetching the raw HTML — not by trusting your framework's marketing page.
The four checks that catch most issues
Run these before touching anything more exotic.
- Unique title and meta description per route, under 60 and 160 characters
- Canonical tag on every indexable page; no self-conflicting variants
- LCP under 2.5s on mobile — usually an image or font problem
- Every important page reachable within three internal links of the homepage
Structured data worth adding
Organization and WebSite site-wide; Article on posts; Product and Offer on commerce pages; FAQPage only where the questions are genuinely on-page. Anything beyond that is usually effort better spent on content.
