Technical SEO Checklist for WordPress in 2026

Technical SEO is the foundation for all other SEO work. Without the right technical setup, it doesn't matter how good your content is – Google simply can't find and understand it.

This checklist guides you through all the technical SEO elements you need to have in order.

Crawlability and indexing
Speed and performance
Core Web Vitals
Mobile-first
Security
URL structure
Structured data
Internal linking
Duplicate content
Tools for technical SEO

Crawlability and indexing

✅ robots.txt

Your robots.txt tells search engines what they can and cannot crawl.

Check:

☐ robots.txt exists at domain.com/robots.txt
☐ Sitemap is linked: Sitemap: https://domain.com/sitemap.xml
☐ Important pages are NOT blocked
☐ Admin, login, and private pages ARE blocked

WordPress standard:

text

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
 
Sitemap: https://domain.com/sitemap.xml

✅ XML Sitemap

Check:

☐ Sitemap exists at domain.com/sitemap.xml
☐ All important pages are included
☐ No 404 or redirect URLs in sitemap
☐ Updates automatically with new content
☐ Submitted to Google Search Console

Recommendation: Use SEOPress, Rank Math or Yoast for automatic sitemap.

✅ Google Search Console

Check:

☐ Site is verified
☐ Sitemap is submitted
☐ No critical crawl errors
☐ Monitor indexing regularly

✅ Meta robots

Check:

☐ Important pages have index, follow
☐ Thank-you pages, login, etc. have noindex
☐ Pagination uses correct noindex or canonical

WordPress: SEO plugins handle this automatically.

Speed and performance

✅ Server Response Time (TTFB)

Time To First Byte should be under 200ms.

Check:

☐ TTFB under 200ms
☐ Good hosting (not shared hosting for important sites)
☐ PHP 8.2+
☐ OPcache enabled

✅ Caching

Check:

☐ Page caching enabled
☐ Browser caching configured
☐ Object caching (Redis/Memcached) for dynamic sites

✅ Images

Check:

☐ WebP format (or AVIF)
☐ Lazy loading enabled
☐ Correct dimensions (don't resize with CSS)
☐ Alt texts on all images
☐ Compressed without visible quality loss

✅ Minification

Check:

☐ CSS minified
☐ JavaScript minified
☐ HTML minified

✅ CDN

Check:

☐ CDN enabled for static assets
☐ Cloudflare, Bunny CDN, or similar

Core Web Vitals

Google's Core Web Vitals are now a ranking factor. Here are the targets:

✅ LCP (Largest Contentful Paint)

How quickly the largest element loads.

Target: Under 2.5 seconds

Optimize:

☐ Optimize hero images
☐ Preload critical resources
☐ Remove render-blocking resources
☐ Server-side caching

✅ INP (Interaction to Next Paint)

How quickly the page responds to clicks.

Target: Under 200ms

Optimize:

☐ Minimize JavaScript
☐ Avoid heavy third-party scripts
☐ Defer non-critical JS

✅ CLS (Cumulative Layout Shift)

How much the layout "jumps" during loading.

Target: Under 0.1

Optimize:

☐ Define width/height on images
☐ Reserve space for ads/embeds
☐ Avoid late-loading fonts

Mobile-first

Google uses mobile-first indexing. Your mobile experience is most important.

✅ Responsive design

Check:

☐ Works on all screen sizes
☐ Text readable without zoom
☐ Buttons large enough to tap
☐ No horizontal scroll

✅ Viewport meta tag

Check:

☐ <meta name="viewport" content="width=device-width, initial-scale=1"> is present

✅ Touch-friendly

Check:

☐ Click areas at least 48x48 pixels
☐ Sufficient distance between links
☐ No hover-only functionality

✅ Mobile speed

Check:

☐ PageSpeed Insights mobile score over 70
☐ Critical CSS inline
☐ Images optimized for mobile

Security

✅ HTTPS

Check:

☐ Valid SSL certificate
☐ All pages on HTTPS
☐ HTTP redirects to HTTPS
☐ Mixed content warnings fixed

✅ Security headers

Check:

☐ HSTS enabled
☐ X-Content-Type-Options
☐ X-Frame-Options
☐ Content-Security-Policy (where possible)

URL structure

✅ Permalinks

Check:

☐ Readable URLs (not ?p=123)
☐ Include keywords where relevant
☐ Short and descriptive
☐ Lowercase with hyphens

Recommended WordPress permalink: /%postname%/

✅ Trailing slashes

Check:

☐ Consistent (either all with or all without)
☐ Redirects in place for inconsistency

✅ www vs non-www

Check:

☐ One version (either www or non-www)
☐ The other redirects permanently (301)

Structured data

Schema markup helps Google understand your content.

✅ Basic schema

Check:

☐ Organization or LocalBusiness
☐ WebSite with SearchAction
☐ WebPage on all pages
☐ BreadcrumbList

✅ Content-specific schema

Check based on content:

☐ Article/BlogPosting for blog posts
☐ Product for products
☐ FAQ for FAQ sections
☐ HowTo for guides
☐ LocalBusiness for physical businesses
☐ Review for reviews

✅ Validation

Check:

☐ No errors in Rich Results Test
☐ No errors in Schema Markup Validator

Internal linking

✅ Structure

Check:

☐ Clear hierarchical structure
☐ Important pages max 3 clicks from homepage
☐ Breadcrumbs implemented
☐ Category/tag pages link to related content

✅ Anchor text

Check:

☐ Descriptive anchor text (not "click here")
☐ Natural variation in anchor text
☐ Keywords in anchor text where relevant

✅ Broken links

Check:

☐ No broken internal links
☐ Regular scanning for 404s
☐ Redirects on deleted pages

Duplicate content

✅ Canonical tags

Check:

☐ Canonical tag on all pages
☐ Self-referencing canonicals
☐ Correct canonical on pagination

✅ Hreflang

For multilingual sites:

Check:

☐ Hreflang tags on all language versions
☐ x-default for default language
☐ Reciprocal links (both pages link to each other)

✅ Pagination

Check:

☐ Canonical to page 1 OR
☐ View-all page OR
☐ Accept pagination as separate pages

Tools for technical SEO

Free

Google Search Console – Indexing, errors, performance
PageSpeed Insights – Speed and Core Web Vitals
Rich Results Test – Schema validation
Lighthouse – Complete audit (Chrome DevTools)
Screaming Frog (500 URLs free) – Crawl analysis

Premium

Ahrefs/Semrush – Complete SEO platform
Screaming Frog (full) – Advanced crawling
Sitebulb – Visual technical SEO audit

Monthly technical SEO check

Run this check monthly:

Google Search Console
- ☐ Check for new crawl errors
- ☐ Review Coverage report
- ☐ Check Core Web Vitals report
Speed
- ☐ Run PageSpeed Insights on key pages
- ☐ Compare with last month
Broken links
- ☐ Scan for 404 errors
- ☐ Create necessary redirects
Indexing
- ☐ Check that new pages are indexed
- ☐ Remove outdated pages from index

Conclusion

Technical SEO can seem overwhelming, but by systematically following this checklist, you ensure that your WordPress site has a solid foundation.

Start with the critical elements (crawlability, HTTPS, speed), and then work through the other points.