How to Find Images Missing Alt Text on Your WordPress Site

Missing alt text is easy to introduce (a theme that strips it, an editor who forgot, an image uploaded years ago before anyone cared) and hard to find by hand once a site has more than a handful of pages. Here are the ways to actually find them, from free and manual to instant.

1. Check one page at a time (free, slow)

Right-click any image on a live page and choose "Inspect". Look for the <img> tag: no alt attribute at all, or alt="" on an image that isn't purely decorative, both count as missing. This works but doesn't scale past a few pages.

2. Use your browser's accessibility panel

Chrome, Firefox and Edge all ship a built-in accessibility audit (Chrome DevTools → Lighthouse → Accessibility, or the "Accessibility" tab directly). It flags images with no alt attribute on the current page. Still one page per run, but faster than reading HTML by hand.

3. Scan the whole site automatically

A crawler that reads your sitemap and checks every <img> tag on every page is the only approach that scales past a handful of pages. That is what a full audit does, and you can try a live sample for free right now, no login or install required:

Scan your site free →

Fixing what you find

Two ways to close the gap once you know where it is:

• Do it yourself, ongoing: Alt Text BYOK, a WordPress plugin that writes alt text automatically for every image you upload from now on, using your own AI API key.
• Done for you, one-off: the Alt Text Audit — we crawl your public pages, find every image with missing or empty alt text, and hand you a CSV with a ready-to-paste alt text for each one, in 2 working days.

Questions: deus@lumnika.com.

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