A launch is the easiest moment to get technical SEO right. Fixing it later means redirects, lost rankings and awkward conversations.
Crawling and indexing
- A clean
robots.txtthat does not block the live site - An XML sitemap submitted in Google Search Console
- Canonical tags on every page, pointing to the preferred URL
- No staging domains left indexable
Speed and Core Web Vitals
- Images in modern formats, correctly sized and lazy-loaded
- Fonts preloaded and limited to the weights you use
- Largest Contentful Paint under 2.5 seconds on mobile
Structure and metadata
- One clear
h1per page and a logical heading order - Unique titles and meta descriptions written for people, not just keywords
- Structured data for the organisation, breadcrumbs and articles
Migrations
If you are replacing an old site, map every old URL to its new home with a 301 redirect. This single step protects most of the rankings you already have.
Launch day is not the finish line. Watch Search Console for the first four weeks.
Want a second pair of eyes before you go live? Get in touch.
Written by Stream Quanta Tech team
Published 18 Sept 2026
