WordPress powers a large share of the web, which also means its most common technical SEO problems are well known: bloated page builders, unoptimized images, plugin conflicts, and caching that’s either missing or misconfigured. None of these show up as obvious “errors.” They show up as a site that ranks worse than its content deserves. This checklist covers what to check, in order, and why each item matters.

1. Confirm the foundation is actually correct

Before anything else, verify these basics, since a single wrong setting here undermines everything below it:

• HTTPS is enforced site-wide, with no mixed-content warnings (HTTP resources loading on an HTTPS page)
• Search engine visibility is switched on: WordPress has a built-in setting (Settings → Reading → “Discourage search engines from indexing this site”) that gets left checked after development far more often than it should
• Permalinks use a clean structure (Settings → Permalinks), not the default ?p=123 query-string format
• A single canonical version of the domain resolves: www vs. non-www and trailing slash vs. no trailing slash should redirect to one consistent version, not serve duplicate live URLs

2. Page speed and Core Web Vitals

Google’s Core Web Vitals measure real user experience, and WordPress sites built with page builders like Elementor are the most common offenders here because of how much CSS and JavaScript a visually rich page can load. The current thresholds, measured at the 75th percentile of page loads on both mobile and desktop:

Metric	What it measures	“Good” threshold
LCP (Largest Contentful Paint)	How fast the main content loads	2.5 seconds or less
INP (Interaction to Next Paint)	How responsive the page feels when clicked or tapped	200 milliseconds or less
CLS (Cumulative Layout Shift)	How much the layout jumps around while loading	0.1 or less

Source: web.dev/articles/vitals, Google’s official Core Web Vitals documentation.

Practical fixes that matter most on WordPress specifically:

• Compress and serve images in modern formats (WebP/AVIF) with proper width/height attributes set, so the browser doesn’t shift layout while images load
• Enable caching at the hosting or plugin level (many hosts, including Hostinger, offer this built in)
• Reduce plugin count, especially plugins that each load their own CSS/JS on every page regardless of whether that page uses them
• Defer non-critical JavaScript and avoid render-blocking scripts above the fold
• Reserve space for ads, embeds, and dynamically loaded elements so they don’t push content down after it’s already rendered (this is the most common CLS cause)

Test real pages, not just the homepage, at PageSpeed Insights — a fast homepage with slow service pages is a common false sense of security.

3. Crawlability and indexation

• robots.txt doesn’t block CSS/JS files Google needs to render the page, and doesn’t accidentally block whole sections of the site
• XML sitemap is current, submitted in Google Search Console, and only includes canonical, indexable URLs (most SEO plugins, including Yoast and Rank Math, generate this automatically, but it’s worth spot-checking after any major page restructuring)
• No orphan pages: every page that should rank has at least one internal link pointing to it from elsewhere on the site
• Redirect chains are resolved: a URL that redirects to another redirect wastes crawl budget and dilutes link equity; each old URL should point directly to its final destination in one hop

4. Structured data (schema)

Schema markup doesn’t directly boost rankings, but it helps search engines understand what a page is about and can enable enhanced results (review stars, FAQ dropdowns, breadcrumbs in the SERP). On WordPress:

• Confirm your SEO plugin’s schema output matches what’s actually visible on the page (mismatched schema is a policy violation, not just wasted effort)
• Use Google’s Rich Results Test to validate markup on key templates, not just check that a plugin has schema turned on
• Common relevant types for a service business: Organization, LocalBusiness (if applicable), Service, FAQPage, BreadcrumbList

5. Mobile usability

Google indexes and ranks based on the mobile version of a page by default. On a page-builder site, check specifically for:

• Text that’s readable without zooming
• Tap targets (buttons, links) with enough spacing to avoid mis-taps
• No horizontal scrolling caused by elements wider than the viewport
• Elementor’s responsive breakpoints actually tested on real devices, not just the builder’s preview mode

6. Ongoing technical maintenance

Technical SEO isn’t a one-time setup. Build a recurring check for:

• Broken internal and outbound links (link rot accumulates as pages get updated or removed)
• Plugin and WordPress core updates, tested on staging before production
• 404 errors in Search Console, redirected or fixed promptly
• Database cleanup (revisions, spam comments, transient options) that can slow queries over time

The takeaway

Technical SEO on WordPress is mostly about discipline, not obscure tricks: enforce one canonical domain, keep the page genuinely fast, make sure every page is both crawlable and linked to, and validate structured data against what’s actually on the page. Skipping this layer means content and backlink work has to fight against a technical ceiling the whole time.

This is the technical foundation Avanor Growth verifies at the start of every SEO engagement, alongside website design and development work when the fix requires more than configuration. See our SEO process.