Why Accessibility Fixes Often Improve Your SEO Too

Accessibility and SEO are usually treated as separate checklists handled by different people. In practice, a surprising number of accessibility fixes and SEO best practices are the exact same technical change, just serving two different audiences.

Alt Text Serves Both

Alt text describes an image for someone using a screen reader — and it's also one of the few ways Google's crawler understands what an image actually shows, since it can't fully 'see' images the way a person can. A missing alt attribute is both an accessibility gap and a missed SEO opportunity in Google Images.

Heading Structure Helps Navigation, Both Human and Automated

Screen reader users often navigate a page by jumping between headings, which only works if headings follow a logical order (h1, then h2s, then h3s beneath them). Search engines use that same structure to understand a page's topic hierarchy when generating snippets and deciding what a page is really about.

Semantic HTML Over Generic Divs

Using a real <button> element instead of a styled <div> with a click handler, or a proper <nav> element for navigation, gives both assistive technology and search engines clear signals about what each part of the page actually does — rather than an undifferentiated block of markup.

Common mistakes

Adding alt text to every image but making it purely decorative and unhelpful (like naming a file 'image1.jpg' verbatim, or writing 'photo' with no real description) — this checks an automated audit's box without providing any of the actual benefit to screen reader users or search engines it exists for.

Fixing heading order and alt text but leaving interactive elements — buttons, form fields, custom dropdowns — with no accessible label at all. Automated scanners catch missing alt text far more reliably than unlabeled interactive controls, so these often go unnoticed despite being a bigger usability barrier.

Check Your Page

Nexora Shield's Accessibility Checker scans a page for missing alt text, unlabeled form fields, poor heading order, and other common a11y gaps — many of which are worth fixing for your search rankings alone.