Website Audit for Ecommerce: What to Check and Why It Matters

Running a website audit on an ecommerce store is different from auditing a blog or brochure site. The stakes are higher — technical problems directly affect revenue — and the pages that matter most have specific SEO and performance requirements that general audit checklists often miss.

This guide covers why ecommerce sites need regular audits, what to prioritise, and the technical issues with the biggest impact on sales.

Why Ecommerce Sites Need Regular Audits

Ecommerce sites are large and dynamic. Product catalogues change, seasonal promotions add and remove pages, inventory status affects what is indexed — and all of this creates a constant stream of new technical issues.

A single missed redirect when a product is discontinued can send would-be customers to a 404 page. Duplicate content across product variants can dilute search rankings. A three-second delay on product pages costs conversions every day it goes unfixed.

Regular audits catch these problems before they compound. Most ecommerce teams run a full audit monthly and check critical pages (checkout, product pages, homepage) weekly.

Page Speed and Ecommerce Conversions

The relationship between page speed and ecommerce conversion rates is well documented. Google and Deloitte found that improving mobile site speed by 0.1 seconds increases conversion rates by 8%. Portent research found that sites loading in one second convert three times better than sites loading in five seconds.

The mechanism is straightforward: slow pages frustrate users, frustrated users leave, and users who leave do not buy. On mobile, where connections are less reliable and attention spans are shorter, the effect is even more pronounced.

Target LCP under 2.5 seconds. For ecommerce, Largest Contentful Paint is usually the product image or hero banner. Prioritise loading this image as fast as possible: use WebP format, serve it from a CDN, and add fetchpriority="high" to the hero image tag.

Eliminate third-party scripts ruthlessly. Live chat widgets, loyalty programme scripts, retargeting pixels, A/B testing tools — each one adds JavaScript execution time to your pages. Audit every third-party tag in your tag manager quarterly. Remove anything that is not generating measurable ROI.

Optimise your checkout flow. Checkout pages need to be fast. A payment step that takes four seconds to load will cause cart abandonment regardless of how good your product pages are.

Product Page SEO

Product pages are the pages that make you money, so they warrant extra attention in any ecommerce audit.

Unique title tags and meta descriptions.Mass-generated titles like “Blue Widget - Brand Name” and meta descriptions copy-pasted from manufacturer specs are weak. Write unique titles that include the product name, a key differentiator, and the brand.

H1 tags should match purchase intent.Your H1 should be the product name, exactly as customers would search for it. If you sell “Organic Cotton Throw Blanket - Navy, 130x170cm”, that should be your H1 — not a shorter version that loses the keywords.

Handle product variants correctly. If the same product comes in multiple colours or sizes, you have a choice: use URL parameters, separate URLs, or canonical tags. The worst outcome is having Google index dozens of near-duplicate pages that compete with each other.

Manage out-of-stock pages carefully. When a product sells out temporarily, keep the page live and indicate it is out of stock. Do not 404 it — you will lose link equity and search rankings. When a product is permanently discontinued, redirect to the closest relevant category page or a similar product.

Structured Data for Products

Structured data (schema markup) allows search engines to display rich results — star ratings, price, availability — directly in search results. For ecommerce, this can significantly improve click-through rates.

The Product schema type is the most important one to implement. At minimum, include:

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Product Name",
  "image": "https://yoursite.com/product.jpg",
  "description": "Product description here.",
  "offers": {
    "@type": "Offer",
    "price": "29.99",
    "priceCurrency": "GBP",
    "availability": "https://schema.org/InStock"
  }
}

Add aggregateRating to show star ratings in search results if you have product reviews. For breadcrumbs, implement BreadcrumbList schema on every product and category page. This shows the navigation path in search results and helps Google understand your site structure.

Broken Links and Redirect Chains

Ecommerce sites accumulate broken links and redirect chains over time as products are discontinued, categories are renamed, and site restructures happen.

Broken links waste crawl budget. Search engines allocate a finite number of requests per crawl session. Every request that returns a 404 is a request not spent indexing a live product page. On large catalogues, this can meaningfully affect how quickly new products get indexed.

Redirect chains slow down users and dilute link equity. A redirect chain is when URL A redirects to URL B, which redirects to URL C. Each hop adds latency, and link equity is reduced with each step. Whenever you create a redirect, check if the destination is itself a redirect and collapse the chain to a single hop.

Canonical Tags and Duplicate Content

Large ecommerce sites are prone to duplicate content problems. Faceted navigation (filtering by colour, size, price, brand) often generates hundreds of URL variations for the same product listing. Session IDs and tracking parameters appended to URLs create apparent duplicates of every page.

Use rel="canonical" tags to tell search engines which version of a page is the preferred one. For faceted navigation, a common approach is to canonicalise all filtered URLs back to the base category page.

Running Your Ecommerce Audit

A systematic audit covers these areas in order of impact:

1. Core Web Vitals — check LCP, CLS, INP for your highest-traffic product pages
2. Broken links — find 404s that need redirects
3. Redirect chains — collapse multi-hop redirects to single hops
4. Structured data — validate Product schema on product pages
5. Meta tags — check for missing, duplicate, or over-length title tags
6. Open Graph — ensure product pages have correct OG images for social sharing
7. Security headers — confirm HTTPS and security headers are in place
8. Sitemap — verify all product pages are included and submitted to Search Console