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Alt Text Checker
Paste HTML to find images with missing, empty, or generic alt text. Runs entirely in your browser — no data leaves your machine.
Why alt text matters
WCAG 1.1.1 requires all non-text content to have a text alternative. Screen readers announce the alt text to blind users — without it, images are invisible. Decorative images should use empty alt (alt="") with role="presentation" to be skipped by screen readers.
xsbl detects missing alt text across all your pages automatically.
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