How to Run a Complete Ecommerce Technical SEO Audit (Step-by-Step)

A technical SEO audit is a systematic review of your store's infrastructure — the stuff search engines see before they even read your content. Most ecommerce store owners focus on keywords and backlinks, but technical issues quietly cap how high you can rank no matter how good your content is.

This guide walks through a complete technical SEO audit for ecommerce stores, covering what to check, what good looks like, and what to fix first.

Step 1: Verify Google Can Crawl and Index Your Store

Start here. If Google can't reach your pages, nothing else matters.

Check robots.txt

Visit yourdomain.com/robots.txt. Make sure you haven't accidentally blocked important pages. Common mistakes:

• Disallow: / — blocks everything (often left from a staging config)
• Blocking /collections/ or /products/ on Shopify stores
• Blocking the entire site when only a staging subdomain was intended

Check sitemap.xml

Visit yourdomain.com/sitemap.xml. Verify it includes all your important pages and doesn't include 404s, redirected URLs, or noindex pages. Submit it in Google Search Console if you haven't already.

Review Google Search Console Coverage Report

In GSC, check the Coverage report for crawl errors, excluded pages with unexpected reasons, and pages discovered but not indexed (a quality or duplication signal).

Step 2: Fix URL Structure and Duplicate Content

Ecommerce sites are especially prone to duplicate content because product catalog URLs can be generated with parameters, filters, and sorting options that create hundreds of "versions" of the same page.

Canonical Tags

Every product and collection page should have a canonical tag pointing to the preferred version of the URL. Check that filtered and sorted URLs canonicalize back to the base collection page.

Faceted Navigation

If your store has filters (size, color, price range), these often create URL combinations that multiply your page count without adding unique content. Solutions: use JavaScript to update filters without changing the URL, block filter URLs in robots.txt, or add noindex to all filtered pages.

Paginated Collections

Collection pages with multiple pages should each canonical to themselves, not to page 1. Don't canonicalize all paginated pages back to page 1 — this is a common mistake that hides content from Google.

Step 3: Audit On-Page SEO Elements

Title Tags

• Every page has a unique title (50–60 characters)
• Product titles include the product name and key attribute, not just the brand name
• No duplicate titles across product variants

Meta Descriptions

• Every key page has a unique meta description (150–160 characters)
• Include a natural call-to-action where relevant

Heading Structure

• Each page has exactly one H1 (the product or page name, not your store name)
• H2s and H3s structure the page content logically

Image Alt Text

• Every product image has descriptive alt text with attributes
• Decorative images use empty alt attributes (alt="")

Step 4: Evaluate Page Speed

Page speed directly affects rankings (Google uses Core Web Vitals as a ranking factor) and conversion rates (a 1-second delay reduces conversions by ~7%).

Core Web Vitals

• LCP (Largest Contentful Paint) — Target under 2.5 seconds. Usually caused by unoptimized hero images.
• INP (Interaction to Next Paint) — Target under 200ms. Usually caused by heavy JavaScript.
• CLS (Cumulative Layout Shift) — Target under 0.1. Usually caused by images without dimensions or late-loading ads.

Quick Wins

• Compress product images (WebP format, under 200KB for standard product shots)
• Set explicit width and height attributes on all images to prevent CLS
• Defer non-critical JavaScript (chat widgets, analytics, social embeds)
• Remove unused apps and plugins

Step 5: Audit Structured Data

Every product page should have Product schema with name, image, description, offers (price, currency, availability), and aggregateRating if you have reviews. Test with Google's Rich Results Test.

Step 6: Check Security and Trust Signals

• All pages served over HTTPS (no mixed content warnings)
• HTTP-to-HTTPS 301 redirect in place
• HSTS, X-Frame-Options, and X-Content-Type-Options headers present

Step 7: Fix Broken Links

Run a crawl of your store to find all 404 links. Fix them by updating the link or setting up a 301 redirect from the old URL to the correct destination.

Step 8: Check Mobile and Accessibility

• Viewport meta tag present on every page
• Text readable without zooming on mobile
• Tap targets (buttons, links) at least 44×44px
• No horizontal scroll on mobile

Automate What You Can

Running this audit manually once is valuable. Running it continuously is what actually protects your rankings long-term. Issues accumulate quietly — a URL change creates a broken link, a plugin update breaks structured data, an image gets uploaded without alt text.

StoreVitals automates 20 of these checks on your schedule, alerting you when new issues appear so you can fix them before they affect your rankings. Run a free scan on your store today.