Article
Technical SEO Checklist for Websites
GAP Team · Jul 16, 2026 · 9 min read
A pragmatic technical SEO checklist you can actually finish. Work through it top to bottom the first time, then use it as a monthly health check.
1. Crawlability
- robots.txt allows all indexable sections.
- XML sitemap includes every canonical URL and is referenced in robots.txt.
- No orphan pages — every important URL has at least one internal link.
- Clean, lowercase, hyphenated URLs with no session parameters.
2. Indexing
- Canonical tags self-reference on the primary URL.
- No accidental
noindexon money pages. - Search Console coverage report shows < 5% of URLs excluded.
- Duplicate content resolved with canonical or 301.
3. Performance & Core Web Vitals
LCP under 2.5s, INP under 200ms, CLS under 0.1 for 75% of real users. Deep dive: What Are Core Web Vitals? and How to Improve Website Speed.
4. Mobile & rendering
- Viewport meta tag present. Tap targets ≥ 48px.
- Content is server-rendered or pre-rendered — not injected after JS hydration.
- Fonts and images use responsive loading with
loading="lazy"below the fold.
5. Structured data
JSON-LD for Organization sitewide, plus Article, Product, or FAQ on the appropriate templates. Validate with the Rich Results Test.
6. Monitor continuously
A checklist is a snapshot. Regressions happen on every deploy — run a continuous scan so you catch a broken canonical the day it ships, not the quarter Google notices.
Frequently asked questions
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