WordPress SEO Mistakes So Easy to Make

First published in 2014, rewritten in 2026 so the advice holds today.

WordPress has a reputation as the CMS that arrives pre-loaded with SEO wins. It doesn't. Like any platform, it's a blank canvas that has to be built and configured properly. What WordPress does offer is a more forgiving starting point than many alternatives, provided you avoid a handful of mistakes that quietly undermine everything else you do.

These aren't obscure technical issues. They're basic setup errors that are still common on WordPress and WooCommerce sites we review today.

XML sitemaps: still non-negotiable

Google's own guidance is straightforward: a sitemap tells search engines about pages on your site they might not otherwise find. That's still true. For newer sites, or sites adding product pages regularly, it's the difference between Google discovering your catalogue quickly and it taking months.

Most modern SEO plugins (Yoast, Rank Math, All in One SEO) generate and update your sitemap automatically. The mistake now isn't forgetting to add one, it's not checking it. Sitemaps can silently fill up with noindexed pages, filtered product URLs, or thin category pages that dilute the useful signal you're sending. Check yours in Google Search Console periodically and make sure it only contains pages you actually want indexed.

Categories and tags still carry weight

Consistent use of categories and tags across posts and products remains a low-cost, sensible habit. Google doesn't rank you on tags alone, but a site with a genuine cluster of content around a topic, say a consistent category structure around "garden furniture" rather than a scattergun of one-off tags, helps search engines understand what your site is actually about.

The common mistake is tag sprawl: dozens of near-duplicate tags created ad hoc by different people over the years, each with one or two posts attached. This creates thin, low-value pages that can drag down overall site quality in Google's eyes. It's worth an annual audit to merge or remove tags that aren't earning their keep.

Google+ authorship is gone. Author trust signals aren't.

The original version of this advice recommended Google+ authorship, the little author photo that used to appear next to search results. Google+ was shut down for consumers in 2019, and authorship markup with it. That specific tactic no longer exists.

What replaced it is broader and, frankly, more important: Google's guidance on Experience, Expertise, Authoritativeness and Trustworthiness (E-E-A-T). For e-commerce and content pages, that means:

• Clear author bylines on blog and advice content, with a real bio
• Author or organisation structured data (schema markup) so search engines can parse who wrote or published something
• Genuine business signals: a proper About page, verifiable contact details, company registration information, and reviews

Most reputable SEO plugins can add author and organisation schema without touching code. It's a five-minute job that's worth doing properly rather than skipping.

The mistakes that have replaced the old ones

Some issues that didn't exist, or didn't matter as much, in 2014 are now bigger risks than anything above:

• Plugin bloat. Every added plugin is a potential drag on page speed, and Core Web Vitals are a ranking factor. Audit installed plugins regularly and remove anything not actively used.
• Image weight. Product photography is often the single biggest cause of slow WooCommerce pages. Serve images in modern formats (WebP or AVIF) and compress before upload.
• Duplicate content from filters and variations. WooCommerce can generate huge numbers of near-identical URLs through filtering and pagination. Make sure canonical tags are set correctly, or these will compete with each other in search results.
• Analytics gaps. Universal Analytics was retired in 2023 in favour of GA4. If your site is still reporting through an old UA property, or nothing at all, you're flying blind on which pages and products actually drive organic traffic.

Takeaway

WordPress gives you the tools to do SEO well, but it doesn't do the work for you. Keep your sitemap clean, use categories and tags with discipline rather than sprawl, replace the old authorship tactics with proper structured data and genuine trust signals, and pay close attention to the newer risks around page speed and duplicate content. None of this is glamorous, but it's the groundwork that everything else in your SEO strategy depends on.