Image Alt Text Checker

Flag images missing alt text for accessibility and search engines.

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Alt text is the written description of an image — read aloud to people using screen readers, shown when an image fails to load, and used by search engines to understand and rank your images. Missing alt text shuts blind users out of part of your content and leaves image search traffic on the table. An alt text checker finds every image that needs one.

What it checks
  • Images with no alt attribute at all
  • Images with empty alt text that should be described
  • Decorative images correctly marked as such
  • The page each flagged image appears on
  • Coverage across your whole site, not just one page

Why it matters

Accessibility is both the right thing to do and, increasingly, a legal requirement — alt text is one of the most cited gaps in accessibility audits. It also feeds image SEO, helping your pictures show up in image search and adding context that supports the page's overall relevance.

How BrandSentryPro does it

Add your site and BrandSentryPro scans your pages for images missing meaningful alt text, lists each with its page, and re-checks as you add new content so gaps don't pile up.

Frequently asked questions

What is alt text?
Alt text (the alt attribute) is a short written description of an image. Screen readers read it aloud, browsers show it when an image fails to load, and search engines use it to understand the image.
Does alt text help SEO?
Yes. It helps search engines understand and rank your images in image search, and it adds relevant context to the page. It is a small, high-value optimisation that many sites neglect.
Do all images need alt text?
Meaningful images do. Purely decorative images should have an empty alt attribute so screen readers skip them. A checker helps you find images that are missing alt text where it is actually needed.

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Add a monitor and BrandSentryPro keeps every check running for you — with alerts the moment something needs attention.

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