Technical SEO checklist for 2026
The non-negotiables for getting your site read correctly by search engines.
Technical SEO is the floor, not the ceiling. Get it right and you remove the obstacles to ranking. Skip it and even great content won't reach its potential.
The non-negotiable list
Mobile-first design. Google indexes the mobile version of your site. If it works on phones, you're fine. If it doesn't, nothing else matters.
HTTPS. Every page, no exceptions. Free with any modern host. Mixed-content warnings tank trust signals.
Page speed. Get to a green Lighthouse score on mobile (90+). Past that, returns diminish. The big wins: optimised images, no render-blocking scripts, efficient hosting.
XML sitemap. Generated automatically by your platform or framework. Submitted to Google Search Console and Bing Webmaster Tools.
robots.txt. Allow crawling of your real pages. Block staging environments, admin panels, search result pages.
Per-page metadata. Every page has its own title tag and meta description, written for humans, with target keywords used naturally.
Canonical tags. Each page declares its canonical URL. Prevents duplicate-content issues from URL parameters or session IDs.
Structured data (JSON-LD). Organisation schema on the home page. LocalBusiness if you have a physical location. BreadcrumbList on internal pages. Article schema on blog/resource posts.
Open Graph and Twitter cards. Every page has an OG image, title, and description so links shared on social platforms get rich previews.
Internal linking. Important pages are linked to from the navigation and from other pages. Orphan pages (no internal links pointing to them) are invisible to search engines no matter what's on them.
Image alt text. Real, descriptive alt text on every meaningful image. Decorative images get empty alt (alt="") so screen readers skip them.
hreflang for multilingual sites. If you serve multiple languages, declare them. Otherwise Google sees a duplicate-content problem and picks one version arbitrarily.
404 handling. A real 404 page with navigation, not a server error. Broken links should still let visitors find their way.
Crawl budget management. For large sites, exclude low-value pages from indexing. For small sites, ignore this.
What you can ignore in 2026
Meta keywords. Dead since 2009.
Keyword density. Modern algorithms read context, not frequency.
Old-school redirect chains. Just point each old URL to the new one directly.
XML video sitemaps and image sitemaps unless you have a real video or image library. Optional polish.
Where studios mess this up
The fixes are all small. The mistake is doing none of them, or doing them once and never auditing again. A monthly Search Console review catches most regressions.