Technical SEO Checklist for 2026 (Plain-English)

Great content can’t rank if Google can’t crawl, render or understand your site. This is the technical SEO checklist we work through — in plain English.

1. Core Web Vitals

Google uses page experience as a ranking signal. Check and fix:

• LCP (largest contentful paint) — how fast your main content loads. Aim under 2.5s.
• INP (interaction to next paint) — how responsive the page feels. Keep it low.
• CLS (cumulative layout shift) — things jumping around as the page loads. Aim near zero (set width/height on images).

2. Crawlability

Make sure Google can reach your important pages and isn’t wasting crawl budget on junk:

• A clean robots.txt that doesn’t block what matters
• An up-to-date XML sitemap submitted in Search Console
• No accidental noindex on pages you want ranked

3. Indexing

Check Search Console’s “Pages” report. Are your key pages actually indexed? Fix “discovered – not indexed” and “crawled – not indexed” issues, usually caused by thin content, duplicates or crawl-budget waste.

4. Site architecture & internal links

A flat, logical structure with strong internal linking helps Google (and users) find your most important pages — and passes authority to them. Important pages should be few clicks from the homepage.

5. Schema / structured data

Add accurate structured data — Organization, Article, FAQ, Product, Breadcrumb — that matches your visible content (marking up content that isn’t on the page breaches Google’s guidelines). Schema also helps AI engines understand and cite you.

6. Mobile-first

Google indexes the mobile version of your site. Make sure it’s fully responsive, fast, and has the same content as desktop.

7. Health & hygiene

The unglamorous stuff that quietly hurts rankings:

• HTTPS everywhere
• Fix broken links and 404s
• Correct redirects (avoid chains)
• Canonical tags to handle duplicates
• No duplicate title tags or meta descriptions

8. Don’t forget speed at the source

The fastest sites are built fast — static where possible, minimal heavy JavaScript, optimised images (AVIF/WebP with set dimensions). Bolting performance on later is harder than building it in.

Want a prioritised technical audit done for you? See our technical SEO service, or run a free instant on-page check to see where you stand right now.