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Image Alt Text Checker

Find image tags with missing or empty alt attributes.

Let’s get to work

Fill in the details below to get started.

BROWSER + URL
Reads the initial HTML through this site’s Cloudflare Function. Some websites block automated requests; private URLs are not supported.
Choose exactly one source: URL, pasted HTML, or file. Maximum 2 MiB.

About Image Alt Text Checker

Inspect image elements and their alt attributes from a page URL, pasted HTML or an HTML file. Empty alt can be correct for a decorative image. The tool reads the HTML response, not content created after JavaScript runs. URLs are requested through this site’s Cloudflare Function. Private URLs should not be entered.

How to use it

  1. Enter one page URL, paste HTML or choose an HTML file.
  2. Run the checker.
  3. Review missing, empty and populated alt attributes in context.

Frequently asked questions

Is an empty alt always an error?

No. alt="" is often appropriate for a purely decorative image. Review the image in context.

Does this check CSS background images?

No. CSS backgrounds are not img elements and are not included.