Tools /  ARIA Label Spot-Checker

ARIA Label Spot-Checker

ARIA検査
検証済TESTED
PASTE HTML
ELEMENTS CHECKED
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ERRORS
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WARNINGS
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A quick spot-check of common ARIA mistakes, not a full accessibility audit. Your HTML is analyzed in your browser only and never rendered.

How it works

仕組み

A quick spot-check for the ARIA mistakes that appear in almost every codebase. Paste some HTML and it hunts for broken aria-labelledby references, buttons and links with no accessible name, aria-label sitting on plain divs where screen readers ignore it, aria-hidden="true" on elements a keyboard can still reach, misspelled or invalid role values, and redundant roles that native HTML already provides. It’s deliberately a spot-checker, not a full WCAG audit; think of it as a sharp chisel for the most common cuts. Your HTML is parsed in-browser only and never rendered or uploaded.

Why doesn’t aria-label work on a plain div or span?

Generic elements have no ARIA role, so most screen readers have no reason to announce a name for them and simply skip the label. Give the element a suitable role (or use a semantic tag like <nav> or <button>) and the label starts working. Better yet, label the actual control inside it.

What’s wrong with aria-hidden="true" on a focusable element?

The element stays in the keyboard tab order, but screen readers announce nothing when focus lands on it, so the user hits a silent dead spot and can’t tell what they’re on. Either remove aria-hidden, or take the element out of the tab order too with tabindex="-1" or the disabled attribute.

Is a redundant role like role="button" on a <button> harmful?

Not functionally: assistive tech behaves the same either way, which is why this tool marks it as info rather than an error. It’s still worth removing: it adds noise, invites drift if the element changes later, and usually signals markup copied from a div-based pattern. The first rule of ARIA is to prefer native HTML.

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