⚡ Technical SEO Checklist

How long your server takes to respond. Target: <300ms (ideal), <600ms (acceptable), >800ms (problem).

• Is my TTFB <300ms? (measure at webpagetest.org)
• Is my hosting fast (not cheap shared)?
• Do I have a CDN enabled (Cloudflare, BunnyCDN)?

💡 "The hosting is the number one lever for server speed." — CUBO-09

Every redirect adds 100-300ms. A chain of 3 redirects = 300-900ms of penalty.

• Do I have no redirect chains (max 1)?
• Does HTTP redirect to HTTPS (not the other way)?
• Does www redirect to non-www (or vice versa, consistently)?

If your site is an SPA (React, Vue, Angular), Google needs SSR to read the content.

• Does my site have SSR or prerendering?
• Can Google see the content without JavaScript?
• Did I run the "view source" test to verify?

Instant ping to Bing/Yandex when you publish. No waiting for the next crawl.

• Do I have IndexNow configured?
• Is every new page submitted automatically?

ChatGPT, Perplexity and Claude bots need access to your site to cite you.

• Does my robots.txt allow AI bots (GPTBot, PerplexityBot)?
• Am I not blocking ClaudeBot or other AI bots?
• Is my sitemap up to date?

Unoptimized images are the #1 cause of slowness. A resize can save 86% of file size.

• Are my images in WebP or AVIF?
• Are they resized to display dimensions?
• Do I have lazy loading enabled?

💡 "A massive saving, 86% saving. Down to 32 kilobytes. It was almost a megabyte before." — CUBO-09

The 3 metrics Google uses to measure user experience.

• Is my LCP (Largest Contentful Paint) <2.5s?
• Is my INP (Interaction to Next Paint) <200ms?
• Is my CLS (Cumulative Layout Shift) <0.1?

If your site is in multiple languages, hreflang tells Google which version to show each country.

• Do I have hreflang tags for each language?
• Do I have x-default for users without a specific language?
• Are canonical URLs correct?