Image ALT Text Checker

How it works

1. Paste the full URL of the page you want to inspect (for example https://example.com/gallery).
2. The tool fetches the page and finds every <img> element in the HTML.
3. It reads each image's src and alt values and evaluates the ALT text.
4. You get a full table marking each image as good, empty or missing ALT — with a summary count.

What it checks

• Missing ALT — images with no alt attribute at all.
• Empty ALT — images with alt="" that may need a real description.
• Descriptive ALT — images that already carry meaningful text.
• Image source — the src path so you can identify each file.
• Total image count — how many images the page loads in markup.
• Coverage ratio — the share of images with proper ALT text.

Common use cases

• Accessibility checks — meet WCAG expectations for non-text content.
• Image SEO — help your photos rank in Google Images.
• Content audits — verify every new article ships with described images.
• E-commerce pages — ensure product images carry keyword-rich, accurate ALT text.

Example

Run the tool on a product page with 14 images and you might find 9 with good ALT text, 3 with empty alt="" and 2 with no attribute at all. The report names the exact files so you can add descriptions like alt="red leather running shoe side view" in minutes.

Frequently asked questions

Is the Image ALT Text Checker free?

Yes — completely free, with no signup and no usage limits. Inspect as many pages as you like.

Should every image have ALT text?

Meaningful images should describe their content; purely decorative images can use an empty alt="" so screen readers skip them. The tool surfaces both so you can decide.

How does this fit a wider on-page review?

Pair it with the On-Page SEO Audit for a full page score and the Mobile-Friendly Checker for usability, then follow our image SEO optimization guide to write ALT text that ranks.