🖼️ Image Alt Text Checker

Alt text is the written description of an image, read aloud by screen readers for visually-impaired users and used by search engines to understand what an image shows. Missing alt text is both an accessibility failure and a missed SEO opportunity — especially for image search. This tool scans a page and flags every image that's missing alt text.

How to Use This Tool

Enter a page URL and click Check Image Alt Text. The tool lists every image on the page and flags those without a meaningful alt attribute.

What This Tool Checks

Every <img> element on the page, whether each has an alt attribute, and whether that attribute is empty. It reports how many images have alt text and lists those that are missing it.

Understanding Your Results

Images flagged as missing alt text need a description added. Note that purely decorative images (like spacers or background flourishes) are correctly given an empty alt="" on purpose — so a flagged image isn't always a mistake, but content images should always have descriptive alt text.

How to Fix Common Problems

Add descriptive alt text to content images in your CMS — in WordPress, every image in the media library has an "Alt Text" field. Describe what the image shows, naturally including a relevant keyword only where it genuinely fits. Leave alt empty (alt="") only for purely decorative images.

SEO Best Practices

Write alt text that would make sense to someone who can't see the image — describe its content and function, not "image of." Keep it concise. Don't keyword-stuff alt text; it should read naturally.

Example

Scanning a blog post finds 8 images, 5 with alt text and 3 without — adding descriptions to those 3 content images improves accessibility and image-search visibility.

Common Mistakes to Avoid

Don't stuff keywords into alt text — it should describe the image, not list search terms. Don't add alt text to purely decorative images; they should have empty alt so screen readers skip them.