Missing alt text is one of the most common and most overlooked SEO issues on WordPress sites. It’s not dramatic — it doesn’t cause a penalty, it doesn’t trigger an error, it doesn’t show up in your analytics. It just quietly costs you ranking opportunities, every day.
What search engines do with missing alt text
When Google crawls a page and finds an image with no alt text, it does its best to infer what the image is about from the surrounding content and the image filename. Sometimes it gets close. Usually it doesn’t — particularly for product images with filenames like DSC_4821.jpg or for images that appear in isolation without much surrounding text.
The result is that the image contributes nothing to the page’s relevance signal. It’s a missed opportunity to reinforce what the page is about and what it should rank for.
The cumulative effect
A single missing alt text is trivial. A hundred missing alt texts on a product catalogue, a portfolio, or a blog archive is a meaningful SEO gap. Across a site with thousands of images — which is normal for an established WordPress site or WooCommerce store — missing alt text represents a significant amount of unrealised ranking potential.
Worse, if your competitors have addressed their alt text and you haven’t, the gap compounds over time. They’re sending stronger relevance signals on every page. You’re not.
The SEO gap problem
ALTification’s SEO gap detection identifies images that have alt text — but alt text that doesn’t include the page’s target keyword. This is subtler than missing alt text, but often more common. It’s the difference between a site that technically passes an accessibility audit and a site that’s actually doing image SEO properly.
An image that says “modern kitchen with glass roof” on a page optimised for “inset glass roofs” has alt text — but it’s not working for SEO. ALTification flags this as an SEO gap and gives you a one-click path to fix it.
The fix is simpler than you think
Addressing missing and weak alt text doesn’t have to be a manual project. ALTification’s per-page scanner lets you go to any page, see every image, check what alt text exists, and generate improved versions with full page context — in under a minute per page. For a typical site, you can close the most important SEO gaps in an afternoon.