Accessibility · Free Tool
Alt Text Checker
Paste your HTML and check every image for missing, empty or unhelpful alt text — the first thing a screen reader relies on. Everything runs in your browser.
How it works
Your HTML is parsed locally with the browser’s own DOMParser — nothing is uploaded. Every <img> is inspected: a missing alt attribute fails WCAG 1.1.1, an empty alt="" is only correct for decorative images, and alt text that merely repeats the file name or says “image”/“photo” is flagged as low-quality. Good, descriptive alt text passes.