Online retail is unforgiving. You can have great products, competitive prices and slick photography, and still be invisible in search because of technical and content mistakes buried in how your store is built. E-commerce sites are especially prone to SEO problems because they generate large numbers of pages automatically, and small issues multiply across thousands of products and categories. The result is wasted crawl budget, diluted authority and rankings that never reflect the quality of what you sell.
This guide walks through the e-commerce SEO mistakes that most often hold UK online shops back, and gives a practical fix for each. Whether you run a Shopify store, a WooCommerce site or a bespoke platform, these are the issues worth checking first.
Mistake one: thin and duplicate product descriptions
The single most common e-commerce SEO failing is product descriptions lifted straight from the manufacturer. When dozens of retailers sell the same product using the identical supplied blurb, none of them stands out, and search engines have no reason to favour your version over a bigger competitor's. Worse, thin descriptions of a single line offer nothing for search engines to work with and little to persuade the shopper.
The fix
Write original descriptions for your important products, focusing first on your best sellers and highest-margin lines where the effort pays back fastest. Describe the benefits, the use cases, the materials and the details a shopper actually wants, in your own words and brand voice. You cannot always rewrite every product in a catalogue of thousands, so prioritise. For long-tail products, at least ensure enough unique content to avoid pure duplication, and use structured attributes and genuine customer reviews to add unique text to the page naturally.
Mistake two: poor site architecture
A confused site structure is one of the most damaging and least visible problems. If your categories are illogical, your URLs inconsistent, or important products buried many clicks from the homepage, both shoppers and search engines struggle. Authority flows through your site via internal links, and a tangled structure means that authority never reaches the pages that need it.
The fix
Aim for a shallow, logical hierarchy where any product is reachable within a few clicks of the homepage. Organise categories the way customers think about your range, use clean and consistent URLs, and make sure your main categories are linked from the homepage and navigation. A clear structure helps search engines understand which pages matter and helps shoppers find what they want, which lifts both rankings and conversions.
Mistake three: category pages with no content
Category pages are often the most valuable pages on an e-commerce site for SEO, because they target broad, high-volume commercial searches such as "women's running trainers" or "oak dining tables". Yet many stores leave them as a bare grid of products with no descriptive text at all. That gives search engines almost nothing to understand the page by, and leaves an easy ranking opportunity on the table.
The fix
Add genuinely useful content to your key category pages. A few well-written paragraphs that describe the range, help shoppers choose, and naturally include the terms people search can make a substantial difference. Place it where it aids the shopper, such as a concise introduction at the top and more detailed guidance below the products, so it informs without pushing the products down the page. Focus your effort on the categories that matter most commercially.
Mistake four: ignored technical SEO
Because e-commerce platforms generate pages automatically, technical issues accumulate quietly. Broken links, incorrect canonical tags, unmanaged redirects from discontinued products, bloated code and crawl errors all pile up over time and drag a site down. Many store owners never look under the bonnet until rankings slide.
The fix
Run regular technical audits to catch issues before they compound. Check that canonical tags correctly point to the preferred version of each page, that redirects are in place for removed products and changed URLs, that your XML sitemap is accurate, and that there are no widespread crawl errors. Make sure the site is properly mobile-friendly, since most shopping traffic is on phones. Technical SEO is not glamorous, but on a large store it is often where the biggest gains hide.
Mistake five: faceted navigation gone wrong
Faceted navigation, the filters that let shoppers narrow by size, colour, price and so on, is brilliant for users and a menace for SEO if left unmanaged. Every combination of filters can generate a unique URL, and a site can suddenly have hundreds of thousands of near-duplicate filtered pages. Search engines waste their crawl budget on these low-value URLs, and duplicate content problems spread.
The fix
Control which filtered pages search engines can access and index. Decide which filter combinations have genuine search demand, such as a colour or a brand within a category, and allow those to be indexed with proper optimisation, while preventing endless low-value combinations from being crawled and indexed. Techniques include careful use of canonical tags, robots directives and parameter handling. This is a nuanced area where getting it wrong either wastes crawl budget or accidentally blocks valuable pages, so it deserves proper attention.
Mistake six: slow product pages
Speed matters everywhere, but on e-commerce it directly affects both rankings and revenue. Shoppers abandon slow pages, and page experience is a ranking consideration. Product pages are frequently the worst offenders because they are loaded with large images, reviews widgets, related-product carousels and third-party scripts.
The fix
Optimise images with compression, correct sizing and modern formats, since images are usually the biggest weight on a product page. Reduce and defer non-essential scripts, particularly third-party tags that accumulate over time. Use lazy loading so below-the-fold content loads as needed. Measure real performance on mobile, not just on a fast office connection, and treat Core Web Vitals as a shopping-experience issue as much as an SEO one. Faster pages rank better and convert more, so the return is double.
Mistake seven: missing structured data
Structured data, or schema markup, helps search engines understand your products and can unlock rich results in search, such as star ratings, prices and availability shown directly in the listing. Stores that omit product schema miss the chance to make their listings more prominent and clickable, which costs them traffic even when they rank.
The fix
Implement product schema on your product pages, including price, availability and review ratings where genuine, and use other relevant schema types across the site. Make sure the markup accurately reflects what is on the page, because misleading schema can cause problems. Done correctly, rich results make your listings stand out in a crowded results page and lift click-through rates without any change in ranking position.
Mistake eight: mishandling out-of-stock products
How you handle out-of-stock and discontinued products is a surprisingly common weak point. Deleting a page the moment an item sells out throws away any ranking and links it had earned, and returns visitors a dead end. Leaving thousands of permanently unavailable products live can also clutter the site with dead-end pages.
The fix
Distinguish between temporary and permanent unavailability. For temporarily out-of-stock items you intend to restock, keep the page live, make the status clear, and offer alternatives or a back-in-stock notification so the page keeps its value and the visitor stays engaged. For permanently discontinued products, redirect the page to the most relevant category or a suitable replacement so its accumulated authority is preserved and shoppers land somewhere useful rather than on an error page. A consistent policy here protects both rankings and customer experience.
Mistake nine: weak internal linking
Internal linking is how authority and relevance flow around your store, yet many e-commerce sites rely almost entirely on the main navigation and nothing else. Deep products and secondary categories end up isolated, receiving little internal link support, so they struggle to rank however good they are.
The fix
Build internal links deliberately. Link related products to one another, connect category pages to relevant sub-categories and key products, and use content such as buying guides and blog posts to link through to the products and categories they discuss. A buying guide on choosing a mattress, for instance, should link to the relevant category and to specific recommended products. This spreads authority to pages that need it, helps search engines discover and understand your range, and guides shoppers towards a purchase.
Putting it together
Few stores suffer from just one of these problems; they usually accumulate several. The sensible approach is to audit properly, then prioritise by impact. Technical foundations and site architecture come first, because they affect everything else. Then invest in content on your most valuable categories and products, sort out faceted navigation and out-of-stock handling, add schema, and strengthen internal linking. Because e-commerce issues multiply across many pages, fixing systemic problems often produces gains far larger than the effort on any single page would suggest.
Frequently asked questions
Which e-commerce SEO mistake should I fix first?
Start with technical foundations and site architecture, because they affect every page and often unlock quick gains. Then focus content effort on your most commercially important categories and products.
Do I really need unique descriptions for every product?
Ideally yes, but in practice you prioritise. Write original descriptions for your best sellers and highest-margin lines first, and for the long tail ensure enough unique content, aided by structured attributes and genuine reviews, to avoid pure duplication.
How do I handle filters without creating thousands of duplicate pages?
Decide which filter combinations have real search demand and allow those to be indexed and optimised, while using canonical tags, robots directives and parameter handling to keep endless low-value combinations out of the index. It is a nuanced area worth getting professionally right.
What should I do with out-of-stock products?
Keep temporarily unavailable products live with clear status and alternatives, and redirect permanently discontinued products to the most relevant category or replacement so their authority is preserved and shoppers do not hit dead ends.
Will adding schema improve my rankings directly?
Schema does not directly boost rankings, but it can unlock rich results such as ratings and prices in the listing, which lift click-through rates and bring more traffic from the same position. It is a high-value, relatively low-effort improvement.
Where NetTrackers fits
Fixing e-commerce SEO well means combining technical depth, content and careful architecture, which is exactly what our e-commerce SEO service delivers. It draws on our SEO audit specialists to find what is holding your store back and our organic SEO team to build lasting visibility. For a quick sense of where you stand, start with a free SEO audit.
We work month-to-month with no long contract, so we keep earning your business. Book a free strategy call and we will show you which fixes will move the needle for your online shop.