Free tool · No install to check

Free WordPress alt text checker

Check your WordPress site for images with missing or weak alt text — free, no plugin install. Get a prioritised fix list by email, then clean up the library in wp-admin. Want the broader image SEO audit framing (same crawl)? See the free image SEO audit.

OpptiAI WordPress alt text checker report preview

Preview of the PDF-style report you receive after the public-page check.

From check to fix in three steps

1. Scan

Enter your URL. We crawl your public pages and flag every image with missing or weak alt text.

2. Review

Get a prioritised report showing the highest-impact pages and images to fix first.

3. Fix in bulk

Install the free plugin and bulk-generate accurate, SEO-ready alt text you approve before saving.

Get the free plugin See pricing

Frequently asked questions

How does the WordPress alt text checker work?

Enter your website URL and we scan your public pages for images, flag every one with missing or weak alt text, and email you a prioritised PDF report. It is free and does not require installing anything to run the check.

What counts as missing or bad alt text?

An image has "missing" alt text when the alt attribute is empty or absent, and "weak" alt text when it is a filename (IMG_1234.jpg), a single word, or a generic phrase that does not describe the image. Both hurt accessibility and image SEO.

How do I fix the images the checker finds?

Install the free OpptiAI Alt Text plugin from WordPress.org. It bulk-generates SEO-ready descriptions for every flagged image, which you review before saving. Paid plans start at £4.99/month for higher monthly volume.

Is checking alt text important for SEO?

Yes. Alt text is how Google understands and ranks your images in Google Images, and screen readers rely on it for accessibility (a WCAG requirement). Missing alt text means lost image traffic and accessibility gaps.