We’ve covered previously why accessibility overlay widgets don’t actually fix accessibility and can even increase lawsuit risk — so it’s worth being equally clear about what does help: AI alt text generation specifically targets one of the most common, genuine WCAG failures on WordPress sites — missing or inadequate image descriptions — and does it at a scale manual effort rarely matches.
Why Missing Alt Text Is Such a Common, Real Gap
A site accumulating hundreds or thousands of images over years — blog post banners, product photos, team headshots — very often has a real backlog of images with no alt text at all, or generic, unhelpful text like “image1.jpg” left over from a bulk upload. Writing proper alt text for each one manually is tedious, easy to deprioritize, and the kind of task that realistically never gets fully caught up on without dedicated tooling.
How AI Alt Text Tools Actually Work
- Analyze the image itself — actual visual content, not just the filename or surrounding text.
- Factor in page context — generating descriptions relevant to where and how the image is actually used, not a generic caption disconnected from its placement.
- Bulk-process the existing media library — several current tools add a “Generate with AI” option directly in the Media Library, with bulk actions covering dozens or hundreds of images in one pass, addressing the historical backlog problem directly rather than only fixing new uploads going forward.
Why This Serves Both Accessibility and SEO Simultaneously
Proper alt text supports screen readers (genuine WCAG 2.2, ADA, Section 508, and EAA compliance value) and also helps search engines understand image content for image search and general on-page relevance — a rare case where a single fix genuinely serves both the accessibility and SEO goals at once, rather than requiring separate, competing efforts.
Where This Fits Relative to Overlay Widgets
| Approach | What it actually fixes |
|---|---|
| Accessibility overlay widget | Surface-level adjustments only — 20-30% of WCAG criteria at most, doesn’t touch underlying code or content |
| AI alt text generation | Directly fixes a specific, real, common WCAG failure (missing/inadequate image descriptions) at the content level |
AI alt text isn’t a complete accessibility solution on its own — it addresses one specific, common gap, not the full range of WCAG criteria (keyboard navigation, form labels, color contrast, and more all still need their own attention). But it’s a genuine fix for the specific thing it targets, unlike a widget layered on top that doesn’t change the underlying code at all.
What to Actually Do
- Audit your current media library for missing or inadequate alt text before choosing a tool — understanding the actual scope of your backlog informs whether bulk AI generation or a smaller manual pass is the better fit.
- Use AI generation for the bulk historical backlog, then review a sample for accuracy rather than assuming every generated description is perfect — AI-generated alt text is a strong starting point, not infallible.
- Set a process for new uploads going forward, whether that’s AI-assisted generation at upload time or a manual habit, so the backlog doesn’t simply regrow after the initial cleanup.
- Treat this as one piece of a real accessibility effort, not the whole project — pair it with genuine attention to the other WCAG criteria an overlay widget would have only superficially claimed to address.
This pairs directly with Accessibility Overlay Widgets: Why They Might Increase Lawsuit Risk and Color Contrast in Block Themes: A Practical WCAG Guide. Want your site’s image accessibility audited and fixed? Get in touch.
Frequently Asked Questions
Is AI-generated alt text as good as manually written descriptions?
Modern tools produce genuinely useful, context-aware descriptions for most images, though a spot-check for accuracy is worth doing, particularly for images where precise detail matters (products, informational graphics) rather than assuming every generated description is perfect.
Does fixing alt text alone make a site WCAG compliant?
No — it addresses one specific, common criterion among many. Real compliance requires attention to keyboard navigation, form labels, color contrast, and the broader WCAG checklist, not alt text in isolation.
Can AI alt text tools process an entire existing media library at once?
Yes — several current plugins specifically offer bulk-processing actions for exactly this use case, addressing historical backlogs rather than only fixing new uploads going forward.
Featured image: original illustration.